1. Synovial Plicae of the Knee

    In this month’s Radsource MRI Web Clinic, Dr. Leland Tsao provides an in-depth review of a group of anatomical structures in the knee that variably result in significant clinical symptoms.

  2. Plantar Vein Thrombosis

    In this month’s Radsource MRI Web Clinic, Dr. Stephen Quinn discusses a cause of foot pain and swelling that is likely underdiagnosed.

  3. Hurricane Season 2018: Radsource Protects Client Data from Wrath of Florence

    When threatening weather strikes, Radsource stands ready to support any ProtonPACS customers who may be impacted. Our goals are simple: • Protect and preserve client data • Limit downtime • Protect hardware and equipment The first two weeks of September brought frenzied weather to the Atlantic Basin, producing a total of five named storms, including […]

  4. Salter-Harris Fractures

    In this month’s Radsource MRI Web Clinic, Dr. Martha Norris reviews a group of childhood osseous injuries in which the risk of growth disturbance can be assessed with MRI.

  5. Persistent Median Artery

    A 35 year-old male patient presents with index finger ischemia and volar wrist pain. Fat-suppressed proton density-weighted axial (1a-c) and sagittal T2-weighted (1d) images through the wrist near the level of the carpal tunnel are provided.

  6. Compartment Syndrome of the Leg

    A 32 year-old male presents with right lateral leg pain and swelling. Symptoms began while running a half marathon two weeks ago. (1A) Axial T1-weighted and (1B,C) fat suppressed T2-weighted images are provided.

  7. Flexor Carpi Radialis Tendinopathy

    A 51-year-old male with chronic wrist pain felt a sudden pop and acute pain exacerbation while lifting a heavy object.  Axial and coronal fat-suppressed proton density-weighted and two sagittal T2-weighted MR images are provided. 

  8. Radsource Completes 13 ProtonPACS Installations in First Quarter of 2018

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), added two new ProtonPACS clients in the first quarter of 2018. Additionally, the company launched 11 new instances of ProtonPACS for existing customers, bringing the total installations for the first quarter to 13. Two new hospital […]

  9. Scheuermann’s Disease

    A 14 year-old male complains of back pain during exercise. A sagittal T2-weighted view of the thoracic spine is provided.

  10. MRI Interpretation: Global Billing is Better for You and Your Patients

    Does your radiologist bill patients directly for the MRI interpretation professional component? You may not realize it but, with this approach, your practice is leaving money on the table. At Radsource, we charge a flat fee for all MRI interpretations regardless of study type or whether contrast is utilized, and our clients bill globally for […]

  11. Meniscal Tear Patterns in ACL disruption

    A 16 year-old female presents after twisting her knee while playing basketball 7 days prior.  Cropped fat-suppressed proton density-weighted coronal (1A) and sagittal (1B) images are provided. 

  12. Pathology of the Teres Minor

    A professional football player presents with posterior shoulder pain following a fall onto the anterior shoulder during a game. T2-weighted sagittal (1A), fat-suppressed proton density-weighted axial (1B,C) and fat-suppressed T2-weighted coronal images (1D) are provided.

  13. Radsource Adds 11 ProtonPACS Installations in Q4:2017

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), added four new ProtonPACS clients in the fourth quarter of 2017. Additionally, the company launched new instances of ProtonPACS for seven existing customers, bringing the total installations for the fourth quarter to 11. The company deployed […]

  14. Extensor Pollicis Longus Rupture

    A 43 year-old male presents with pain for 3 days after injury. He is experiencing forearm cramping and is unable to extend his thumb.

  15. Baastrup’s Disease

    An 84 year-old female presents with low back pain, right leg pain, hip pain, numbness and weakness.

  16. Atypical Femur Fractures

    A 62 year-old female with a history of arthritis has had vague left thigh pain for several months. An MRI was performed to evaluate the musculature and femur.

  17. Osteomyelitis

    A 16 year-old male presents with pain for 2-3 weeks following a soccer injury.  An MRI was performed for suspected cartilage injury.

  18. Hurricane Season: Protecting your PACS

    As we are experiencing a dangerous and unpredictable hurricane season, we wanted to remind our customers and colleagues about the steps we take to protect your PACS and critical patient data. As soon as a dangerous storm is predicted, Radsource quickly initiates the following steps: 1.  Prepare standby servers that could be used as replacements […]

  19. Pseudomeningocele

    35 year-old obese female was status post a recent microdiscectomy at L4-5 with resolution of radicular symptoms. Three days post-operatively she developed headaches and episodic recurrent left radicular symptoms.

  20. Radsource Adds Nine ProtonPACS in Q2 2017

    In the second quarter of this year, Radsource completed nine installations of ProtonPACS, including: Plastikos Surgery Center (Dunwoody, GA), Antioch Medical Imaging (Antioch, CA), Anaheim Hills Imaging Center (Anaheim, CA), Doral Imaging Institution (Doral, FL), Walker Street Imaging (Cypress, CA), Angelina Diagnostic Radiology (Lufkin, TX), Southwest Diagnostic Center (Denver, CO), Arista Medical Imaging (Mesa, AZ) […]

  21. The Calcaneofibular Ligament

    A 49 year-old male suffered an ankle inversion injury requiring reduction 2-3 weeks prior to imaging and presents with continued pain and swelling. MRI was performed to evaluation for ankle subtalar joint dislocation.

  22. Dr. Leon Toye joins Radsource leadership team

    Radsource would like to announce the addition of Dr. Leon Toye to the leadership team of Radsource, who will now be serving as a Radsource Medical Director, assisting in clinical support duties with Drs. Awh and Stadnick. Dr. Toye has worked with Radsource since 2011, and has 13 years of musculoskeletal MRI experience. Prior to […]

  23. Smaller Hospitals Can Afford a Powerful PACS

    As healthcare costs continue to rise and uncertainty mounts with regard to changes to the ACA, rural and community hospitals face a difficult challenge. With limited financial resources, how is it possible to make the technology upgrades needed to create efficiency and deliver better care? We work with many smaller hospitals who struggle to find […]

  24. Common Peroneal Nerve Abnormalities

    A 17-year-old male presents with foot drop 4 months following surgery for an ACL tear and a posterolateral corner injury. Axial fat-suppressed proton density-weighted (1a), axial fat-suppressed T2-weighted (1b,c) and coronal fat-suppressed T2-weighted (1d) images are provided.

  25. PACS Workflow: How Much Time Do You Waste…?

    Think about this. How much time do you waste…. Re-entering patient demographic data? Fixing data entry errors? Faxing and scanning reports? Manually pushing images? Burning CDs? Finding ways to improve workflow is one of the top concerns we hear from our PACS clients. If your current workflow involves multiple points of data entry and manually […]

  26. Klippel Feil Syndrome

    A 60 year-old woman presented to her physician complaining of upper and lower extremity pain. A (1a) T2-weighted sagittal MR image and (1b) sagittal and (1c) coronal cervical spine CT images are provided.

  27. Radsource Completes a Record 10 ProtonPACS Installations in Q1 2017

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), has started the year strong with a record 10 installations in the first quarter of 2017. This is the largest number of installations in a single quarter thus far, representing a significant milestone for Radsource and […]

  28. Acromioclavicular Trauma in the Skeletally Immature Patient

    An 11 year-old boy presents with shoulder pain after a fall from a tree. T1-weighted (1a) and T2-weighted (1b) coronal oblique fat-suppressed images, and a fat-suppressed T2-weighted (1c) axial image through the left shoulder are provided.

  29. ProtonPACS: Grant Access Feature

    Radsource’s custom-developed client access portal is one of our most popular features for PACS clients. This portal provides an easy, simple and secure way for our clients to access final reports through any web browser. The portal’s integrated Thin Viewer gives physicians the ability to view studies anywhere, at any time, and it works on […]

  30. Atypical Scan Angles in Musculoskeletal MRI

    In the March 2017 Radsource MRI Web Clinic, Drs. Leon Toye and Nabeel Anwar discuss the utility of non-orthogonal imaging planes in the evaluation of the musculoskeletal system.

  31. Costal Cartilage Injuries

    A 26 year-old football player presents with severe anterior chest pain following a tackling injury. MRI of the sternum was performed. A (1A) fat-suppressed T2-weighted coronal image and (1B,C) fat-suppressed proton density-weighted axial images are provided.

  32. Radsource Completes Eight ProtonPACS Installations in Q4 2016

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), completed five ProtonPACS installations for new customers and added three imaging centers for existing customers in the final quarter of 2016. In total, Radsource has added 28 new ProtonPACS customers this year. In the fourth quarter […]

  33. Achilles Tendon Pathology

    In the 1st MRI Web Clinic of 2017, Dr. Michael Stadnick revisits a site of tendon pathology that is a common source of morbidity in adult patients.

  34. Chondroid Lesions

    In this month’s Radsource MRI Web Clinic, Dr. Pamela Burdett discusses the evaluation and management of one of the most commonly encountered osseous lesions in musculoskeletal MR.

  35. Five Benefits of Cloud PACS

    The term Cloud PACS can encompass an array of titles: Hosted PACS, PACS Software as a Service (SaaS), Off-site PACS, and Web-based PACS. Regardless of the title used, a Cloud PACS must meet certain criteria to qualify as a cloud service as noted by the National Institute of Standards and Technology (NIST). Each of the […]

  36. Nine Steps to Selecting a PACS Vendor

    The search for a Picture Archiving and Communication System partner can be daunting with multiple vendors each promising a different combination of software, hardware, support and data storage.  Here are 9 simple steps to help guide you through the PACS vendor selection process: Identify all stakeholders and ensure everyone is given the chance to provide […]

  37. Foreign Body Imaging with MRI

    In this month’s Radsource MRI Web Clinic, Drs. Leon Toye and Anthony Onofrio discuss an entity that may present diagnostic challenges in a variety of musculoskeletal locations.

  38. Radsource Launches Six ProtonPACS Installations in 3rd Quarter

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), has rolled out six new installations of ProtonPACS in the third quarter. In 2016, the total number of new ProtonPACS customers is 18. Diagnostic Radiology (Edmond, OK), the practice of Jon D. Donshik, M.D., P.A. (Plantation, […]

  39. Radsource Helps ProtonPACS Clients Prepare for Hurricane Matthew

    As residents and businesses in Florida and along the southern Atlantic seaboard brace themselves for Hurricane Matthew, Radsource is taking proactive steps to protect PACS hardware, software and data for our ProtonPACS clients in the affected regions. We’ve taken the following steps to limit downtime and put our clients in a position to recover as quickly as possible in the event […]

  40. Traumatic Neuroma

    A 45 year old man fell through a plate glass window 6 months ago, lacerating the right wrist with subsequent diminished sensation in the right thumb, index and middle fingers. He now presents to the orthopaedist with an enlarging painful mass in the wrist at the site of injury.

  41. Today’s Interesting Case: Pigmented Villonodular Synovitis

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time. A 24 year-old male presents with knee pain and swelling and a posterior mass. A fat-suppressed proton density-weighted sagittal image reveals extensive lobulated soft […]

  42. Stress Fractures in the Foot and Ankle

    A 17 year-old female presents with three months of anterior ankle pain. (1a) Axial T1-weighted and (1b) coronal proton-density weighted fat-suppressed images are provided.

  43. Radsource Adds Six ProtonPACS Clients in 2nd Quarter

    Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), has expanded its PACS service area with six new installations in the second quarter, bringing the total to 12 new implementations in 2016. Bright Light Radiology (Chicago, IL), South Bend Orthopaedics (South Bend, IN), Low Country […]

  44. Radsource Welcomes New Radiologist – Tom Hash, MD

    Radsource is pleased to announce that we have a new radiologist, Tom Hash, MD. Dr. Hash is a highly experienced musculoskeletal radiologist who obtained his bachelor’s degree from Duke University. He attended medical school at the Medical College of Georgia, which was followed by an Internal Medicine internship at the Naval Medical Center in Portsmouth, […]

  45. The Thumb Carpometacarpal Joint

    A 21 year-old male crashed his all-terrain vehicle 10 days ago and radiographs revealed dorsoradial dislocation of the thumb CMC joint. Coronal STIR images of the wrist/thumb are provided.

  46. Today’s Interesting Case: Pectoralis Tear

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.  Today’s case involves a 46 year-old male who was injured playing hockey and presents with pain, bruising, and a lump in the anterior chest.   […]

  47. Deep Venous Thrombosis

    A 62 year-old female complains of progressive knee pain that worsens with exercise.

  48. Today’s Interesting Case: Patellar Dislocation

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.  For our case today, we present an 18 year-old male with knee pain and stiffness after a fall down steps.         […]

  49. Ulnar Collateral Ligament Tears of the Thumb

    A 16 year-old male presents with pain and laxity at the thumb metacarpophalangeal joint after a fall onto his right hand 12 days prior to the MRI examination.

  50. PACS Press Release Fourth Quarter 2015

    Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), has expanded its PACS service area with five new installations in the final quarter of 2015. Great Falls Clinic Medical Center (Great Falls, MT), Capstone Family Medicine (Wasilla, AK), Barnhill-Parker Sports Medicine (Amarillo, TX), Sturdy Orthopedics & Sports Medicine […]

  51. Posterior Glenohumeral Instability

    A 72 year-old male presents with severe left shoulder pain and limited motion following a fall 10 days earlier.

  52. Today’s Interesting Case: Stener-like Lesion

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.   Today’s case involves a 39 year-old male who presented 2 months after injuring his little finger playing basketball with pain along the unar aspect of […]

  53. Acromial Apophysiolysis

    A 16 year-old female presents with shoulder pain and stiffness for 2 months. The pain started when she increased her softball activities and overhead weightlifting.

  54. Ankylosing Spondylitis

    A 16 year-old male presented to his physician complaining of low back pain and stiffness and bilateral hip pain for 2 years.

  55. PACS Press Release 3rd Quarter 2015

    PACS Press Release Nashville, Tenn. – Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), has expanded its PACS service area with six new installations in the third quarter of 2015. Arizona Orthopaedic Surgical Hospital (Chandler, AZ), Houston County Community Hospital (Erin, TN), iRad Associates (Miami, FL), Memorial […]

  56. Iliopsoas Tendinopathy

    A 77 year-old female presents with left groin pain with prominent hip flexion weakness for a month, with no known injury.

  57. Today’s Interesting Case: Isolated Coracoid Fracture

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.   A 15 year-old male presents following a direct blow to the shoulder in football. The surgeon suspects a labral tear.   A fat-suppressed […]

  58. Sternoclavicular Joint Pathology

    A 31 year-old female presents with anterior pectoralis muscle hardening and swelling with extreme pain. She has a history of multiple episodes of MRSA infection over the previous 9 years.

  59. Today’s Interesting Case: Axillary Nerve Entrapment

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.    A 48 year-old male reports loss of strength in the right arm and shoulder pain since a hockey injury.   A fat-suppressed proton-density […]

  60. Intraosseous Pneumatocyst

    A 50 year-old man was involved in a motor vehicle accident with complaints of shoulder and neck pain.

  61. Today’s Interesting Case: Grade III Hamstring Tear

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.    A 58 year-old male presents after acute injury from playing kickball 2 weeks ago. The patient felt a pop at the posterior thigh. […]

  62. Primary Synovial Chondromatosis

    A 51-year-old male presents with slowly progressive swelling, loss of range of motion and intermittent locking of the right knee.

  63. Today’s Interesting Case: HADD with Intramuscular Involvement

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.    Today we are reviewing the case of a 52 year-old male presenting with severe shoulder pain for 2 years.   A fat-suppressed T2-weighted […]

  64. Today’s Interesting Case: Tibial Eminence Fracture

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.   In today’s case, a 17 year-old female presents after suffering a hyperextension injury while playing soccer.     A sagittal fat-suppressed proton density […]

  65. Today’s Interesting Case: Twisting Injury

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time. A 36 year old male suffered a twisting injury 2.5 weeks ago.     A coronal fat-suppressed proton density-weighted image reveals a thickened and […]

  66. Trochlear Dysplasia

    A 15-year-old female presents with knee pain following a sports injury nine days prior.

  67. Today’s Interesting Case: Adhesive Capsulitis

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.  Today, we are exploring the case of a 62 year-old female presenting after a fall 2 months earlier with shoulder pain and markedly restricted movement.   A […]

  68. Today’s Interesting Case: Hip arthroplasty

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.   Our case today explores the use of magnetic resonance imaging (MR) in the evaluation of the affected hip in patients who have undergone hip […]

  69. Today’s Interesting Case: Posterior Tibial Tendon

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.  Our case today involves rare pathology. The patient  is a 51 year-old female presenting with medial ankle pain on weight-bearing. She experienced trauma with a […]

  70. Subcoracoid Bursa

    A 35 year-old female presents with shoulder pain after injuring her shoulder lifting a gate.

  71. Today’s Interesting Case: A Smile in Contrast

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.    In our case today, a 21 year-old female presents with a 2 month history of neck pain and right arm radiculopathy.     […]

  72. The Owl’s Eyes Sign

    A 52 year-old male presents to his orthopedic surgeon complaining of chronic bilateral hand numbness and tingling.

  73. Today’s Interesting Case: Knee Dislocation

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our blog series Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.   In today’s interesting case, an 18 year-old male presents following a recent skiing injury.  The severity of the patient’s injury can be seen in […]

  74. Today’s Interesting Case: Athletic Pubalgia

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our new blog series, Today’s Interesting Case, our team will post notable cases and images for discussion from time to time. Today’s Interesting Case is from a 34 year-old hockey goalie who felt a pull when doing the splits during a game.  MRI findings […]

  75. Today’s Interesting Case: Hydroxyapatite Deposition Disease

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our new blog series, Today’s Interesting Case, our team will post notable cases and images for discussion from time to time.    Today’s case is from a 58 year old female with wrist numbness and tingling. The findings are compatible with hydroxyapatite deposition disease, […]

  76. Today’s Interesting Case: ACL Tibial Avulsion Fracture

    Radsource radiologists are constantly communicating and sharing knowledge with each other. In our new blog series, Today’s Interesting Case, our team will post notable cases and images for discussion from time to time. Today’s case involves an 11 year old injured while skiing. It is an example of classic MR pathology: ACL tibial avulsion fracture. While […]

  77. Hypermobile Lateral Meniscus

    A 16 year-old male presents with persistent lateral knee pain and snapping for 10 months.

  78. Distal Biceps Tendon Rupture Elbow

    A 56 year-old male presents with swelling and ecchymosis in the antecubital fossa following a “pop” and acute onset of pain while lifting a heavy weight one week earlier.

  79. ProtonPACS Keeps Systems Running Despite Power Outage

    HYBRID ARCHITECTURE OF ORTHOPAEDIC PACS SOLUTION KEPT SYSTEMS RUNNING AT CENTRAL JERSEY ORTHOPAEDIC PRACTICE. When the orthopaedic practice experienced a power outage, the ProtonPACS hybrid architecture enabled the site to continue to operate as normal with minimal downtime. As an IT Consultant, Susan Blasi of SMB Consulting, LLC, advises clients on IT strategies, support, software and […]

  80. Baylor Hospitals Implement Enterprise PACS

    Radsource, a leader in radiology clinical services and provider of Picture Archiving and Communication Systems (PACS), announced today that its ProtonPACS solution has been implemented at four Texas hospital locations.   The four Texas specialty surgical hospitals are operated through a partnership controlled by Baylor Scott & White Health.  The medical centers (Trophy Club, Uptown, […]

  81. Common Intraosseous Cysts

    A 61 year-old male presents with posterior left shoulder pain and limited range of motion for six months. No known injury. An axial fat-suppressed proton density image at the level of the lower glenoid is provided. What are the findings? What is your diagnosis?

  82. Radsource Announces New Website Design

    NASHVILLE, Tenn. – Radsource, LLC, a provider of MRI interpretation services and of ProtonPACS, has launched a new website at www.radsource.us. The new website combines the company’s two business focuses of MRI interpretation and PACS onto one platform, thus unifying its brand and messaging.  The site features an enhanced MRI Web Clinic that allows users […]

  83. Proximal Iliotibial Band Syndrome

    Clinical History: A 53 year-old female complains of progressive pain around the area of the iliac crest with no history of trauma. A T2-weighted fat suppression image in the coronal plane of the pelvis is provided.

  84. Osteochondral Injury of the Elbow

    Clinical History: An 11 year-old female gymnast presents with right elbow pain and popping with flexion. A coronal inversion recovery image is provided.

  85. Chiari I Malformation

    A 36 year-old female presents with neck pain and headaches. A sagittal T1-weighted image of the brain is provided (A). What is the finding? What is your diagnosis?

  86. Accessory Anterior Inferior Tibiofibular (Bassett’s) Ligament

    A 16 year-old female presents with chronic anterolateral ankle pain and a history of injury one year prior. Oblique axial proton density-weighted (1A) and coronal (1B) and sagittal (1C) T2-weighted fat-suppressed images are provided. What are the findings? What is your diagnosis?

  87. ProtonPACS Announces Partnership with NRHA

    ProtonPACS, a division of Radsource, has signed on as a pipeline partner with the National Rural Health Association (NRHA), company officials announced today. The partnership exemplifies the commitment by ProtonPACS to understanding the needs of rural health providers nationwide. “We are proud to partner with the National Rural Health Association,” said Dr. Mark Awh, President […]

  88. Ankle Extensor Tendon Pathology

    Clinical History: A 62 year-old woman fell while descending the steps from her front porch. She presents to the orthopaedist 3 weeks later, reporting weakness of the left foot and a palpable mass over the anterior left ankle. MRI of the ankle was obtained with axial fast spin-echo T2-weighted (1a), coronal fat suppressed proton density-weighted […]

  89. Sesamoid Bones: Normal and Abnormal

    Clinical History: A 20-year-old female college tennis player presents with a long-standing history of intermittent, fluctuating pain at the plantar aspect of the first metatarsophalangeal joint, increasing over the past 3-4 months. A marker was placed over the region of pain. Axial T2-weighted fat-suppressed (1a), sagittal STIR (1b), and sagittal T1-weighted (1c) MR images are […]

  90. MRI of Rectus Femoris / Quadriceps Injury

    Clinical History: A 16 year-old female track athlete presents with a 6 week history of a thigh mass and pain. Axial proton density fat-suppressed (1a) and sagittal T2-weighted fat-suppressed (1b) images are provided. What are the findings? What is your diagnosis?     Findings     Diagnosis Intramuscular degloving injury of the rectus femoris muscle. […]

  91. Accessory Muscles of the Hand and Wrist

    Clinical history: A 29 year-old female presents with increasing swelling of the volar 1st web space for several years. She has numbness in the thumb and pain with gripping. Proton density-weighted (1a) and STIR (1b) axial images and T1-weighted sagittal (1c) and coronal (1d) images are provided. What are the findings? What is your diagnosis? […]

  92. Subacute and Chronic Avulsion Injuries of the Extensor Mechanism of the Knee

    Clinical History: A 13 year-old boy presents with constant dull ache in the anterior aspect of the knee. He has a history of basketball and football injuries. A marker was placed over a palpable nodule at the time of the MR imaging. T1-weighted and fat-suppressed proton density-weighted sagittal images are provided. What are the findings? […]

  93. Pathology of the Long Head of the Biceps Tendon

    Clinical History: A 68 year-old male presents with a 2 month history of pain and limited range of motion. Coronal oblique T2-weighted fat-suppressed (1a,1b), axial proton density-weighted fat-suppressed (1c), and sagittal oblique T2-weighted FSE (1d) images are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Bursal sided insertional partial tear […]

  94. Lipoma and Liposarcoma

    Clinical History: A 65 year-old male presents with right flank pain and sensation of a mass. (1a,1b) T1-weighted sagittal and coronal images and a (1c) STIR coronal image are provided. What are the findings? What is your diagnosis? Findings Diagnosis Intramuscular lipoma with fat necrosis.   Introduction Lipomas are the most common soft-tissue mass encountered, […]

  95. Bertolotti’s Syndrome

    Clinical History: A 66 year-old male presents to his doctor’s office with a longstanding history of low back and leg pain. On physical exam he demonstrates a left L5 radiculopathy. The patient is referred for an MRI of the lumbar spine. (1a,b) T2-weighted coronal and T1-weighted axial images are provided. What are the findings? What […]

  96. Acetabular Labral Tear

    Clinical History: A 15 year-old female runner with a history of pain and possible stress fracture. (1a) Coronal T2-weighted with fat saturation and (1b) Axial proton density-weighted with fat saturation images of the right hip are provided. What are the findings? What is your diagnosis? Findings Diagnosis Undersurface detachment of the posterior superior right acetabular […]

  97. Bipartite Medial Cuneiform

    Clinical History: A 32 year old male patient presented with pain in the tarsal region and burning in the dorsal foot, after a twisting injury. (1a) Sagittal T1, (1b) sagittal fat saturated fast spin echo (FSE) T2, and (1c) coronal fat saturated proton density (PD) weighted magnetic resonance (MR) images of the ankle are provided. […]

  98. Proximal Gastrocnemius Tendon Pathology

    Clinical history: A 58 year old woman presents for MRI with right knee and leg pain and swelling medially for 3 weeks, without a specific injury. Sagittal proton density images with fat saturation at the medial aspect of the knee (1a,1b) are provided. What are the findings? What is the diagnosis?   Findings   Diagnosis […]

  99. MRI of the Diabetic Foot

    Clinical History: A 60 year-old female presents with foot and ankle pain with swelling for 3 months. No history of trauma. Axial proton density fat-suppressed and sagittal T2-weighted fat-suppressed images are provided. What are the findings? What is the diagnosis? Findings   DIAGNOSIS Charcot foot (neuroarthropathy), with LisFranc dislocation, destruction of the tarsal-metatarsal joints, and […]

  100. Articular Osteochondroses of the Lower Extremity

    Clinical History: A 9 year old boy presents for imaging with a 4 week history of medial and lateral ankle pain and progressive swelling. (1a) A single sagittal T1-weighted image through the right foot is provided. What are the findings? What is the diagnosis?   Findings   Diagnosis Articular Navicular Osteochondrosis (Köhler Disease). Additional images […]

  101. Palmar Bursae and Flexor Tendon Sheaths of the Wrist and Hand

    Clinical History: A 55-year-old man developed slowly progressive swelling of the right hand and wrist over the previous several months. Fat-suppressed T2-weighted axial image just proximal to the wrist (1a) and fat-suppressed T1-weighted post-contrast axial images at the levels of the metacarpal shafts (1b) and metacarpal heads (1c) are provided. What are the findings? What […]

  102. Lipoma Arborescens

    Clinical History: A 78 year-old male complains of a distal thigh mass for six months. MRI of the distal thigh was performed. Corresponding (1a) sagittal fat-suppressed proton density (PD FS) and (1b) T1-weighted images are presented. What are the findings? What is your diagnosis?   Findings   Diagnosis Villous lipomatous proliferation of the synovial membrane […]

  103. Transient Lateral Patellar Dislocation

    Clinical History: A 23 year-old female presents with medial knee pain following a twisting injury. (1a) A single fat-suppressed proton density-weighted coronal image is provided. What is the diagnosis?   Findings   Diagnosis Transient lateral patellar dislocation. Although you may feel that being asked to make the specific diagnosis of lateral patellar dislocation from a […]

  104. Intraarticular Osteoid Osteoma

    Clinical History: A 29 year-old female complains of progressive knee pain and stiffness without a history of trauma. A radiograph (not shown) demonstrated no abnormality. T1-weighted (1a) and proton density fat suppressed (1b) sagittal images of the knee are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Intraarticular osteoid osteoma. […]

  105. Rotator Cuff Pitfalls

    Clinical History: An orthopaedic surgeon requests an over-read of a pre-operative MRI that was presumed to be false positive, as no rotator cuff tear was found at surgery. The patient is a 54 year-old male who experienced shoulder pain following a pulling injury. (1a,1d) Fat-suppressed T2 weighted coronal obliques, (1b) fat-suppressed proton density axial, and […]

  106. Deltoid Ligament Injuries

    Clinical History: A 27 year-old male presents with severe ankle pain two weeks following an inversion injury of the ankle. Proton density-weighted fat-suppressed coronal (A) and T2-weighted FSE (B) axial images are provided. The syndesmotic ligaments between the tibia and fibula were found to be intact on the other views. Assess the extent of lateral […]

  107. Internal Derangement of the Temporomandibular Joint

    Clinical History: A 45 year-old female presents with a history of chronic ear pain and headaches. She recently experienced an episode of locking of her jaw. Oblique sagittal proton density-weighted images were obtained through the right temporomandibular joint in both the closed (1a) and open (1b) mouth positions. What are the findings? What is your […]

  108. Unstable Osteochondritis Dissecans of the Medial Femoral Condyle

    Clinical History: A nineteen year-old male presents with knee pain for several years. A (1a) STIR sagittal image is provided. What are the findings? What is your diagnosis? Findings   Diagnosis Unstable osteochondritis dissecans of the medial femoral condyle. Introduction Osteochondritis dissecans (OCD) is an acquired disorder of bone in which there is fragmentation of […]

  109. Ischiofemoral Impingement Syndrome

    Clinical history: A 38 year old female presents with a 10 month history of right hip and groin pain. Axial and sagittal fat-saturated proton density images are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Ischiofemoral impingement. Introduction Ischiofemoral impingement (IFI) was first reported by Johnson in 19771 in three […]

  110. Tendon Intersection Syndromes

    Case 1 A 43 year old female presents with radial side forearm pain after working in her garden for several days. MRI was obtained with axial fat-suppressed fast spin-echo T2-weighted (1a) and coronal inversion recovery-weighted (1b) images.     Case 2 A 60 year old female returned from a week long ski vacation with a […]

  111. Baxter’s Nerve (First Branch of the Lateral Plantar Nerve) Impingement

    Clinical history: A 26 year-old female presents with lateral foot pain and no prior trauma. Axial T2-weighted (1a) and coronal STIR (1b) images are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Baxter’s nerve (first branch of the lateral plantar nerve) impingement. Introduction Heel pain is a common presenting complaint […]

  112. Discitis

    Clinical history: A 91 year-old woman complains of low back pain. A routine lumbar spine MR with (1a) T1-weighted sagittal and (1b,1c) T2-weighted sagittal and axial images was performed. What are the findings? What is your diagnosis?   Findings   Diagnosis Spontaneous pyogenic discitis. Introduction Discitis, infection of the disc and vertebral endplates, has significant […]

  113. Carpal Instability

    Clinical History: A 45 year-old woman with a history of arthritis presents with progressive wrist pain. Fat-suppressed proton density-weighted axial (1a), fat-suppressed T2-weighted coronal (1b), and proton density-weighted sagittal (1c,1d) images are provided. What are the findings? What is your diagnosis?   Findings     Diagnosis Midcarpal instability nondissociative, dorsal type. Introduction Carpal instability remains […]

  114. Tibial Intercondylar Eminence Fractures

    Clinical history: A 7 year-old boy was tackled two day ago. He twisted the knee and felt a pop. Evaluate for anterior cruciate ligament (ACL) tear. (1a) Fat-suppressed proton density and (1b) T1-weighted sagittal images and a (1c) lateral radiograph of the knee are provided. What are the findings? What is your diagnosis?     […]

  115. Pathologic Fractures

    Clinical History: A 58 year-old female with Stage 3A breast cancer presents to her family physician with back pain. A radiograph reveals a severe L1 compression fracture. She is referred to an orthopaedist. On physical exam she exhibits axial type pain without radicular symptoms or myelopathic signs. Concern for possible osseous metastasis to the spine […]

  116. Infrapatellar Ganglion Cyst

    Clinical History: A 41 year-old male presents with a history of lateral knee pain for 6 months. (1a) Axial proton density-weighted with fat saturation and (1b) Sagittal T1-weighted images of the left knee are provided. What are the findings? What is your diagnosis?   Findings     Diagnosis Infrapatellar (Hoffa’s fat pad) ganglion cyst arising […]

  117. Flexor Tendon Injuries

    Clinical History: A 16 year-old male presents with loss of flexion at the distal interphalangeal joint (DIP) of the ring finger, following an injury playing flag football 2 weeks before. T1-weighted axial (1a), fat-suppressed proton density-weighted axial (1b), and T2-weighted sagittal (1c) images are provided. What are the findings? What is your diagnosis?     […]

  118. Turf Toe

    Clinical History: A 20 year-old collegiate football running back presents with severe pain and inability to bear weight following an acute hyperextension injury to his great toe. Fat-suppressed T2-weighted (1a) sagittal and (1b) coronal (short axis) images are provided. What are the findings? What is your diagnosis?   Findings Diagnosis Grade 3 Turf Toe injury. […]

  119. Lateral Hindfoot Impingement

    Clinical History: A 52 year-old man presents with history of 10 years of right ankle pain, and clinical suspicion of subtalar arthritis. Sagittal T1- and fat-suppressed T2-weighted (1a,1b), and coronal fat-suppressed proton density-weighted (1c,1d) images are shown below. What are the findings, and what is your diagnosis?   Findings   Diagnosis Lateral hindfoot impingement, with […]

  120. Acute Musculotendinous Tears of the Latissimus Dorsi and Teres Major

    Clinical History: A 20 year-old professional baseball pitcher presents with axillary pain. (1a) Oblique coronal fat suppressed T2-weighted and (1b) sagittal T2-weighted and (1c) axial fat suppressed proton density-weighted images are provided. What are the findings? What is your diagnosis? Findings   Diagnosis Acute musculotendinous tears of the latissimus dorsi and teres major. Introduction Latissimus […]

  121. Snapping Triceps

    Clinical History: A 19 year-old male presents with numbness and tingling in the ring and small fingers, tenderness to palpation over the cubital tunnel, subluxation of the ulnar nerve with elbow flexion, and medial elbow snapping. (1a) Axial T1-weighted magnetic resonance (MR) image in elbow extension, (1b) axial T1-weighted MR image in elbow flexion, and […]

  122. Femoroacetabular Impingement

    Clinical History: A 22 year old collegiate soccer player presents with bilateral groin pain. MR arthrography was performed bilaterally. What are the findings? What is your diagnosis? Findings   Diagnosis Cam-type femoroacetabular impingement with bilateral acetabular labral tears and chondral loss. Discussion Femoroacetabular impingement (FAI) is not a disease, but a common pathomechanical process which […]

  123. Trapped Periosteum

    Clinical History: A 14 year-old male complains of knee pain after landing awkwardly while playing basketball. A radiograph (not shown) shows mild widening of the medial femoral physis. A fat-suppressed Proton density-weighted coronal image (1a) of the knee is provided. What are the findings? What is your diagnosis? Findings Diagnosis Salter I fracture of the […]

  124. Gout

    Clinical History: A 55 year-old male complains of chronic swelling and pain in the foot with inability to walk on concrete and waking at night, without relief from medication. Axial long axis T1-weighted (1a) and coronal short axis fat suppressed T2-weighted (1b) images through the forefoot are presented. What are the findings? What is your […]

  125. Multi-ligamentous and Tendon Injury Suggesting Knee Dislocation

    Clinical History: A 35 year-old man sustained a hyperextension injury to his right knee while playing football. (1a,1b) Sagittal proton-density and (1c) coronal fat-suppressed T2-weighted images from the MR examination are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Multi-ligamentous and tendon injury suggesting knee dislocation. Discussion Additional fat-suppressed T2-weighted […]

  126. Schwannoma of the Median Nerve

    Clinical History: An 80 year-old male presents with a one year history of a left forearm mass and left hand numbness. Axial T1-weighted (1a) and coronal STIR (1b) images of the forearm are presented. What are the findings? What is your diagnosis?     Findings   Diagnosis Schwannoma of the median nerve. Introduction Neurogenic tumors […]

  127. Posteromedial Corner Injury of the Knee

    Clinical History: A 13 year-old male twisted his knee playing basketball 2 weeks ago. The MR demonstrates an ACL tear (not shown). Fat-suppressed proton density axial (1a) and coronal (1b) images from the study are provided. What additional findings can be seen? What is the diagnosis?   Findings   Diagnosis Posteromedial corner injury of the […]

  128. Acute Injuries of the Lumbar Neural Arch in Adolescents

    Clinical History Case 1: 13 year old male track and field athlete with constant back pain, increased with running.(1a,1b) Sagittal STIR image right and left of midline and (1c) axial T2 weighted images are provided. What are the findings? What is your diagnosis? Case 2: 15 year old male basketball player with low back pain […]

  129. Hip Arthroplasty

    Clinical History: A 60 year-old male presents with recurrent left hip pain 13 years following total joint replacement of the left hip. (1a) Coronal T1-weighted and (1b) coronal STIR images of the hip are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Left acetabular osteolysis following total hip arthroplasty. Introduction […]

  130. Median Nerve Entrapment

    Clinical history: A 53 year-old male presents with a 3 week history of forearm pain and acute onset of loss of thumb flexion. Fat-suppressed proton density-weighted axials images through the distal forearm (1a) and (1b) are presented for interpretation. What are the findings? What is your diagnosis?   Findings   Diagnosis Complete anterior interosseous nerve […]

  131. Evaluating the Varied Appearances of Normal and Abnormal Marrow

    Clinical History: A 43 year old male presents with radicular type pain. Past medical history is non-contributory. (1a) T1- and (1b) T2-weighted sagittal and (1c) T1-weighted axial images are provided. The imaging findings are such that the radiologist feels compelled to place a telephone call to the referring physician. What are the findings? What are […]

  132. Osteoarthritis (OA) of the Knee

    Clinical History: A 55 year-old woman presents with right knee pain. There has been no known injury. A meniscal tear is suspected.  (1a) Axial proton density with fat saturation, (1b) sagittal proton density with fat saturation and (1c) coronal proton density with fat saturation images are provided. What are the findings? What is your diagnosis? […]

  133. Posterior Ankle Impingement

    Clinical History: A 48 year-old female presents with persistent lateral ankle pain and edema 5 months following trauma. (1a) Sagittal T2-weighted with fat-saturation, (1b) axial T1-weighted, and (1c) coronal intermediate-weighted with fat-saturation images of the right ankle are provided. What are the findings? What is your diagnosis?     Findings           […]

  134. Slipped Capital Femoral Epiphysis

    Clinical History: A 10 year-old girl presents with a limp and pain in the right thigh and knee after a fall onto the right knee five months ago. MR imaging of the right knee was normal. MRI of the right hip was obtained and coronal T1 (1a), coronal fat-suppressed T2 (1b), sagittal fat-suppressed proton density […]

  135. Patella Alta and Baja

    Clinical History: A 20 year-old woman is referred for MRI of the knee with complaints of chronic bilateral anterior knee pain and instability. Sagittal 2D gradient echo MRI sequences of the left (1a) and right (1b) knees are provided. What are the findings and what is the likely etiology for the patient’s symptoms?   Findings […]

  136. High Ankle Sprains

    Clinical History: A 17 year-old female injured her right ankle 4 days ago during a soccer game. MRI of the ankle was obtained with axial fast spin-echo T2-weighted (1a), coronal STIR (1b), and oblique coronal proton density-weighted (1c) images. What are the findings? What is your diagnosis?       Findings       Diagnosis […]

  137. Morel-Lavallee Lesions

    Clinical History: A 39 year-old male patient complains of right thigh/pelvic pain and swelling, after being dragged along rocks while parasailing. (1a) Axial T1, (1b) coronal T1, (1c) axial STIR, and (1d) coronal STIR-weighted MRI images are provided. What are the findings? What is your diagnosis?     Findings   Diagnosis Morel-Lavallee lesion Introduction A […]

  138. Piriformis Syndrome

    Clinical History: A 48 year-old female presents with chronic right hip and pelvic pain. Coronal T1-weighed (1a), axial T2-weighted (1b) and coronal inversion recovery (1c) images are provided. What are the findings? What is the diagnosis?   Findings       Diagnosis Piriformis syndrome.   Introduction Piriformis syndrome is an uncommon cause of buttock and […]

  139. Acromioclavicular Joint Trauma

    Clinical History: A 28 year-old male complains of shoulder pain after falling while playing ultimate Frisbee. A (1a) fat-suppressed T2-weighted coronal oblique image through the plane of the acromioclavicular joint and a (1b) fat-suppressed T2-weighted coronal oblique anterior to the plane of the acromioclavicular joint (ACJ) are provided. What are the findings? What is your […]

  140. Distal Triceps Injuries

    Clinical History: A 45 year old male complains of pain and swelling at the posterior elbow following a lifting injury three days ago. A sagittal inversion recovery image at the mid elbow is provided (1a). What are the findings? Is there a complete or an incomplete tear?   Findings   Diagnosis Complete tear/avulsion of the […]

  141. Athletic Pubalgia

    Clinical History: A 20 year-old skater complains of chronic pubic pain radiating to the left groin. (1a) Fat-suppressed T2-weighted coronal, (1b) proton density-weighted axial, and (1c) proton density-weighted sagittal images are provided. What are the findings? What is your diagnosis?     Findings   Diagnosis Moderate osteitis pubis with an associated chronic partial avulsion of […]

  142. Ulnar Collateral Ligament Tears of the Elbow

    Clinical History: A 22 year-old professional baseball pitcher experienced a painful pop and medial elbow pain while throwing. An (1a) inversion recovery coronal image of the elbow is provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Acute, complete proximal tear of the anterior bundle of the ulnar collateral ligament, with […]

  143. Lesser Metatarsophalangeal Joint Instability

    Clinical History: A 56 year-old female presents with gradual onset of right forefoot pain over 4 months. Physical examination reveals point tenderness over the plantar second metatarsophalangeal joint. MRI of the right forefoot was obtained with (1a) sagittal T1-weighted and (1b) fat-suppressed T2-weighted images, (1c) axial fat-suppressed proton density-weighted images, and (1d) coronal fat-suppressed T2-weighted […]

  144. Upper Extremity Sports Injuries

    Clinical History: Images from four different upper extremity sports injuries are presented. Match each patient with the associated sport. A) Boxing B) Gymnastics C) Golf D) Bowling Case 1:   Case 2:     Case 3:     Case 4:   Findings Case 1:   Case 2:   Case 3:   Case 4:   Diagnoses […]

  145. Developmental Variants

    Clinical history: An 8 year old gymnast who injured the knee 5 days ago presents with posterior knee pain. (1a) T1 and (1b) fat suppressed proton density-weighted sagittal images are provided. What is the finding? What is your diagnosis? Findings   Diagnosis Normal developmental irregular ossification of the lateral femoral condyle. Introduction Irregular ossification of […]

  146. Glenohumeral Instability

    Clinical History: A 30 year old male with shoulder pain and instability. Fat-suppressed (1a) axial proton density and (1b) T2-weighted oblique coronal images are provided. What are the findings? What is your diagnosis? Findings Diagnosis ALPSA and Hill Sachs deformities, secondary to acute anterior glenohumeral dislocation. An ALPSA lesion is an anterior labroligamentous periosteal sleeve […]

  147. Lisfranc Ligament Tear

    Clinical History: A 17 year-old male presents with the history of pain due to a football injury incurred three days prior. (1a) Axial T2-weighted and (1b) coronal fat suppressed T2-weighted images of the right midfoot are provided. What are the findings? What is your diagnosis? Findings     Diagnosis Lisfranc ligament tear. Introduction In the […]

  148. Tight Filum Syndrome

    Clinical History: A 59 year-old woman complains of chronic low back pain and bilateral foot paresthesias. Her knee and ankle reflexes are brisk. On further questioning, she relates a history of stress incontinence diagnosed by her family physician. (1a,1b) T1 and T2-weighted sagittals and a (1c) T1-weighted axial image are provided. What are the findings? […]

  149. SLL Tear and DISI Deformity

    Clinical History: Each of two patients presents with wrist pain. What are the findings in relation to the scapholunate ligament? Which patient has the more significant abnormality? Patient 1. Patient 2. Findings Patient 1. 1. Incomplete tear of the scapholunate ligament (SLL) sparing the dorsal component. 2. Essentially normal carpal alignment. Patient 2. 1. Tear […]

  150. Incidentaloma

    Clinical History: A 64 year-old male complains of back pain extending into the left leg. (1a) A left lateral T2-weighted sagittal and (1b) and T1-weighted axial image at the level of the L4-5 disc are provided. What are the findings? What is the diagnosis? Findings Diagnosis Incidental finding of extensive retroperitoneal lymphadenopathy. A subsequent biopsy […]

  151. Plantar Fasciitis

    Clinical History: A 47 year-old male presents with a history of acute onset of heel pain while running, with an audible pop. Sagittal (1a) T1-weighted and (1b) fat-suppressed T2-weighted and (1c) coronal fat-suppressed proton density weighted images are provided. What are the findings? What is the diagnosis? Findings Diagnosis Severe plantar fasciitis with acute rupture […]

  152. Hydroxyapatite Deposition Disease

    Clinical History: A 48 year-old female presents with pain in the left shoulder with reduced range of motion. (1a) A coronal oblique T2-weighted fat-suppressed image and (1b) an axial T2-weighted image are provided. What are the findings? What is the diagnosis? Findings   Diagnosis Hydroxyapatite deposition disease (HADD), with calcium hydroxyapatite crystal deposition along the […]

  153. Extensor Carpi Ulnaris Subsheath Injury

    Clinical History: A 44 year old recreational tennis player complains of chronic, worsening ulnar sided wrist pain. (1a) Gradient echo coronal, (1b) T1-weighted axial, and (1c) STIR axial images of the wrist are provided. What are the findings? What is your diagnosis? Findings Diagnosis Severe extensor carpi ulnaris (ECU) tenosynovitis with partial tearing and mild […]

  154. Lateral Ulnar Collateral Ligament

    Clinical History: A 51 year old female with a history of lateral release for treatment of lateral epicondylitis presents with posterolateral pain and difficulty achieving full elbow extension. The patient was reported as being very anxious when extending the elbow during positioning for the MRI examination. Fat-suppressed T2-weighted coronal (1a) and T2-weighted sagittal (1b) images […]

  155. Tarsal Coalition

    Clinical History: A 12 yo female presents with a history of medial pain and clinician’s note to “evaluate posterior tibial tendon.” (1a) Fat-suppressed T2-weighted sagittal, (1b) fat-suppressed proton density-weighted coronal, and (1c) T2-weighted axial images of the ankle are provided. What are the findings” What is your diagnosis? Findings Diagnosis Talocalcaneal fibrous coalition, posterior facet […]

  156. Accessory Muscles of the Ankle

    Clinical History: A 43 y/o female presents with Achilles region pain. An (1a) axial T1-weighted image is provided. What are the findings? What is the diagnosis? Findings     Diagnosis Flexor Digitorum Accessorius Longus Introduction Multiple accessory, supernumerary, and anomalous muscles have been described in the radiologic, surgical, and anatomic literature. Accessory muscles of the […]

  157. Hypothenar Hammer Syndrome

    Clinical History: A 35 year old male carpenter presents with pain in the hypothenar region of the right hand and ischemia in the third, fourth and fifth fingers. (1a) An axial T1-weighted image and (1b) a coronal plane maximal intensity projection (MIP) image from a contrast enhanced MRA are provided. What are the findings” What […]

  158. Patellar Fat Pad Abnormalities

    Clinical History: 25 year old female presents with a history of chronic lateral knee pain and instability. (1a) Axial and (1b) sagittal fat-suppressed proton density weighted images of the left knee are provided. What are the findings” What is your diagnosis? Findings Diagnosis Patellar Tendon-Lateral Femoral Condyle Friction Syndrome (PT-LFCFS). Introduction Knee pain is a […]

  159. Spondylolisthesis, Spondylolysis

    Clinical History: A 22 year-old man presents with right-sided back pain which radiates to his right hip and leg. His symptoms began while running. (1a) T1- and (1b) T2-weighted sagittal and (1c) T2-weighted axial images of the lumbar spine are provided. What are the findings? What is your diagnosis? Findings Diagnosis Bilateral L5 spondylolysis with […]

  160. Ventriculus Terminalis

    Clinical History: A 47 year-old man presents with chronic right hip and leg pain. Reflexes are normal. No weakness is found on physical exam. The patient denies bowel or bladder dysfunction. (1a) T2-weighted sagittal and (1b) axial images of the lumbar region are provided. What are the findings? What is your diagnosis? Findings Diagnosis Ventriculus […]

  161. Apophyseal Avulsion Injury of the Pelvis

    Clinical history: A 15 year-old male soccer player presents with left hip pain and weakness for four weeks without known injury. He has severe pain over the left anterior superior iliac spine (ASIS) after activity. (1a) An axial fat-suppressed T2-weighted images of the upper pelvis is provided. What are the findings” What is the diagnosis? […]

  162. Intraosseous Lipoma

    Clinical History: A 16 year old male complains of intermittent right heel pain for 7 years, with a recent increase after sports activities. Plain radiographs suggest a “bone cyst”. (1a,1b) Sagittal and axial T1-weighted and (1c,1d) STIR images were obtained. What are the findings? What is the diagnosis? Findings   Diagnosis Calcaneal Intraosseous Lipoma. Introduction […]

  163. Spine Nomenclature

    Clinical History: A 32-year old female presents with back and left leg pain. (1a) T2-weighted sagittal and (2a) T1-weighted axial images are provided.   The best diagnosis in this case is: Herniated nucleus pulposus Disc protrusion Disc extrusion Disc sequestration Findings   Answer This is indeed a disc herniation (preferred term to herniated nucleus pulposus), […]

  164. Longitudinal Stress Fracture

    Two patients with the same diagnosis:   What are the findings? What is your diagnosis? Findings   Diagnosis Longitudinal stress fracture of the tibia. Introduction Marrow edema visible on MRI can have multiple etiologies, and may raise concerns of malignancy or osteomyelitis, particularly when a periosteal reaction is present. Other causes of marrow edema include […]

  165. Meniscal Tear Patterns

    A gradient-echo T2*-weighted sagittal image demonstrates a tear within the posterior horn of the medial meniscus (arrow). The preferred nomenclature for this tear pattern is: A. Radial Tear B. Horizontal Tear C. Vertical Tear D. Longitudinal Tear E. Oblique Tear Answer Although C, a vertical tear, is commonly used to describe such an appearance, the […]

  166. Spring Ligament Tear

    Clinical History: A 59 year-old male with a 3 year history of medial ankle pain is referred for MR imaging. (1a) Fat-suppressed proton density-weighted coronal and (1b) T2-weighted axial oblique images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Partial tear of the posterior tibial tendon with a distal tear of […]

  167. Oblique Meniscomeniscal Ligament

    Clinical History: A 14 year-old female presents with medial knee pain after a basketball injury. (1a) T1-weighted sagittal and (1b) fat-suppressed proton density-weighted axial images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Oblique Meniscomeniscal Ligament Introduction The C-shaped fibrocartilaginous menisci aid in joint stabilization and load transmission. Meniscal tears are […]

  168. Venous Malformations

    Clinical History: A 28 year-old female presents with calf swelling and pain. Sagittal (1a) T2-weighted and (1b) proton density-weighted images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Venous malformation (formerly called hemangioma). Discussion Venous malformations, formerly referred to as hemangiomas, are the most common vascular soft tissue abnormality and comprise […]

  169. Sacral Insufficiency Fractures

    Clinical History: A 73-year-old female presents with chronic low back pain with recent worsening in severity. Sagittal (1a) T1 and T2-weighted images are provided. What are the findings? Which of the findings is the most likely cause of her worsening pain? Findings Diagnosis 1 Sacral insufficiency fracture with a horizontal component through S2. 2 Chronic […]

  170. Pes Anserinus Bursitis

    Clinical History: A 67 year old male presents with medial knee pain and swelling for 1.5 years, no known injury. (1a) Coronal fast spin-echo inversion recovery and (1b) axial fast spin-echo proton density images are presented. What are the findings” What is your diagnosis? Findings Diagnosis Pes Anserine Bursitis. Introduction The pes anserinus (Latin for […]

  171. Os Acromiale

    Clinical History: A 28 year-old male with persistent shoulder pain and limited range of motion presents for MR imaging. (1a) T1-weighted coronal and (1b) fast spin echo T2-weighted sagittal images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Os acromiale. MR Diagnosis Admittedly, the diagnosis in this case based on only […]

  172. Arachnoiditis

    Clinical History: A 67 year old man presents with a history of chronic low back pain radiating into both buttocks, the back of both legs, and into the calves. He also complains of paresthesias manifested as a “pins and needles” sensation in a non-dermatomal pattern. There is no history of neoplasm, back surgery, spine intervention […]

  173. Ulnocarpal Abutment

    Clinical History: A 62 year old female presents with an 11 month history of ulnar sided wrist pain, swelling, and limited range of motion. (1a) Gradient echo and (1b) T1-weighted coronal images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Ulnocarpal abutment Discussion Also known as ulnar impaction syndrome or ulnolunate […]

  174. Silicone Synovitis

    Clinical History: A 64 year-old female underwent a surgical procedure on her left ankle approximately 40 years ago. She now presents with pain and swelling. A sagittal T1-weighted image (1a) and a coronal proton-density, fat suppressed image (1b) are provided. What are the findings? What is your diagnosis? Findings Diagnosis Postoperative changes in the hindfoot […]

  175. Partial Rotator Cuff Tears

    Clinical History: A 53 year-old female presents with shoulder pain. A fat-suppressed coronal T2-weighted image (1a) and sagittal T2-weighted image (1b) are provided. What are the findings? What is your diagnosis? Findings Diagnosis Bursal-sided partial-thickness tear of the supraspinatus tendon. Introduction Partial-thickness rotator cuff tears are estimated to be twice as common as full-thickness tears.1 […]

  176. Fingertip Lesions

    Clinical History: A 50 year-old female presents with pain along the ulnar side of her distal long finger. (1a) Proton-density weighted coronal, (1b) STIR coronal and (1c) contrast-enhanced fat-suppressed T1-weighted axial images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Glomus tumor. Introduction The glomus tumor is one of several characteristic […]

  177. Hamstring Tears

    Clinical History: A 29 year-old professional football player was injured while trying to make a catch. (1a) Sagittal T2-weighted, (1b) fat-suppressed axial proton density-weighted, and (1c) fat-suppressed coronal proton density-weighted images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Grade II tear of the biceps femoris muscle (hamstring tear). Introduction Hamstring […]

  178. ACL Graft Tear

    Clinical History: A 28 year-old professional football player with a history of ACL reconstruction presents with recurrent pain and instability following reinjury. Fat-suppressed proton density-weighted (1a) sagittal and (1b) coronal images are provided. What are the findings” What is your diagnosis? Findings Diagnosis ACL graft disruption with hardware displacement and an acute chondral defect of […]

  179. Jumper’s Knee

    Clinical History: A 24 year-old volleyball player presents with anterior knee pain and swelling. (1a) T1-weighted and (1b) Proton density fat-suppressed sagittal images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Jumper’s Knee Introduction Jumper’s Knee refers to a spectrum of disorders that occur in patients with degeneration and/or tearing of […]

  180. Vertebral Hemangioma

    Clinical History: A 46 year-old female with a history of breast cancer presents with low back pain. (1a) Sagittal T2-weighted, (1b) sagittal T1-weighted and (1c) axial T1-weighted images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Vertebral Hemangioma Discussion Hemangiomas of the vertebral bodies are common benign vascular tumors. Vertebral body […]

  181. Peroneal Tendon Dislocation and Superior Peroneal Retinaculum Injury

    Clinical History: A 35 year-old female with history of prior ankle sprain presents with lateral pain and bruising. T2-weighted axial images are provided at a level just above the tip of the fibula (1a) and 1 cm above this site (1b). What are the findings” What is your diagnosis? Findings Diagnosis 1. Dislocation of the […]

  182. Pectoralis Tear

    Clinical History: A 26 year-old male was injured while bench-pressing. (1a) Coronal oblique T2-weighted fat-suppressed and (1b) axial proton density-weighted fat-suppressed images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Musculotendinous rupture of the sternal head and strain of the clavicular head of the pectoralis major muscle (pectoralis tear). Introduction Rupture […]

  183. Tennis Leg / Plantaris Tendon Rupture

    Clinical History: A 44 year-old male presents with calf pain after being injured while pushing a vehicle, at which time he heard a “pop” in his calf. (1a) Axial and (1b) coronal T2-weighted images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Plantaris tendon rupture. Discussion The plantaris muscle is of […]

  184. Internal Impingement

    Clinical History: A 22 year-old professional baseball pitcher presents with persistent posterior shoulder pain after throwing. A fat suppressed T2-weighted oblique coronal image (1a) and a gradient echo T2*-weighted axial image (1b) are provided. What are the findings” What is your diagnosis? Findings Diagnosis Internal impingement. Discussion The extreme stress placed upon the shoulder by […]

  185. Extensor Tendon Injuries of the Finger

    Clinical History: A 39 year-old female who cut her long finger on a tuna can presents with pain and limited extension at the MCP joint. Sagittal T1 (1a) and axial proton-density fat-suppressed (2a) images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Laceration of the extensor digitorum communis tendon just proximal […]

  186. PCL Tear

    Clinical History: A 17 year-old female presents after falling on her knee while playing soccer. Sagittal (1a) and axial (1b) proton-density weighted fat-suppressed images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Mid-substance posterior cruciate ligament rupture and popliteus muscle partial tear. Introduction Posterior cruciate ligament (PCL) injuries account for up […]

  187. Scaphoid Fracture

    Clinical History: A 28 year-old male with a history of scaphoid fracture presents with persistent wrist pain despite four months of casting. A T1-weighted coronal image (1a) is provided. What are the findings? What is your diagnosis? Findings Diagnosis Delayed union of a scaphoid waist fracture with possible avascular necrosis of the proximal pole. Discussion […]

  188. Partial ACL Tear

    Clinical History: A 40 year-old female presents after a skiing injury. Proton-density weighted fat-suppressed sagittal (1a) and axial (1b) images are provided. What are the findings” What is your diagnosis? Findings Diagnosis Partial tear of the proximal anteromedial band of the anterior cruciate ligament and tear of the medial collateral ligament. Introduction Partial tears of […]

  189. Lumbar Synovial Cyst

    Clinical History: A 53 year old female presents with back and left leg pain. A T1-weighted sagittal image (1a) and a fast spin-echo T2 weighted axial (1b) image are provided. What are the findings” What is your diagnosis? Findings Diagnosis Lumbar synovial cyst, arising from the left L4-5 facet. Discussion Facet joint synovial cysts are […]

  190. Morton Neuroma

    Clinical History: 45 year-old female with pain and swelling in the web space between the 3rd and 4th toes. (1a) T1-weighted coronal and (1b) T2-weighted fat-suppressed coronal images through the distal metatarsals are provided. What are the findings” What is your diagnosis? Findings Diagnosis Morton neuroma in the 3rd intermetatarsal space, with associated intermetatarsal bursitis. […]

  191. Pulley Lesion of the Fingers

    Clinical History: A 28 year-old rock climber presents with persistent pain and swelling at the index finger. (1a) A T2-weighted sagittal image with fat-suppression and (1b) a proton density-weighted fat-suppressed axial image are provided. What are the findings” What is your diagnosis? Findings Diagnosis Rupture of the A2 pulley of the finger (Climber’s Finger). Discussion […]

  192. AVN of the Hip

    Clinical History: A 62 year-old male with a history of right sciatica and previous right femoral head core decompression for avascular necrosis (AVN) presents with recurrent pain. A coronal T1-weighted image (1a) is shown. What is the unexpected finding and what is the diagnosis? Findings (2a) Right hip AVN was diagnosed one year prior in […]

  193. Incidental Findings on Musculoskeletal MR

    Clinical History: A 58 year-old female presents with low back pain and is referred for a lumbar spine MR examination. (1a) T1- and (1b) T2-weighted axial images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Renal cell carcinoma. Discussion The incidental findings in spine and joint MR imaging will vary in […]

  194. Posterior Tibial Tendinopathy

    Clinical History: A 55 year old woman presents with a history of chronic progressive arch pain. Sagittal T1-weighted (1a), axial T2-weighted (1b), and fat suppressed coronal proton density-weighted (1c) images are shown below. What are the findings and what is your diagnosis? Findings Diagnosis Tear of the Posterior Tibial Tendon (PTT). Discussion Posterior tibial tendon […]

  195. Posterior Interosseous Nerve Syndrome

    Clinical history: Persistent forearm pain in a 72 year-old male after a fall. Axial fat suppressed T2-weighted (1a and 1b) and sagittal fat suppressed proton density-weighted (1c) images are shown below. What are the findings and what is your diagnosis? Findings Diagnosis Posterior interosseous nerve entrapment by a ganglion at the level of the radial […]

  196. Triangular Fibrocartilage Tear

    Clinical History: A 35 year-old female presents with ulnar-sided wrist pain. (1a) A fat-suppressed T2-weighted 3D gradient-echo coronal image is provided. What are the findings? What is your diagnosis? Findings Diagnosis Complex tear of the articular disc of the triangular fibrocartilage complex (TFCC). Discussion The term “triangular fibrocartilage complex of the wrist” was first coined […]

  197. POLPSA Lesion

    Clinical History: A 37 year-old male presents with shoulder discomfort, particularly in adduction and mild internal rotation. A fat suppressed proton density-weighted axial image (1a) is provided. What are the findings? What is your diagnosis? Findings Diagnosis Posterior labrum periosteal sleeve avulsion (POLPSA) lesion with associated posterior glenohumeral instability. Discussion Posterior instability of the shoulder […]

  198. Little League Elbow

    Clinical History: A 15 year-old baseball pitcher presents with persistent medial elbow pain. Fat suppressed proton density-weighted (1a) coronal and (1b) axial images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Little League Elbow Discussion In 1960, Brogdon and Crow1 described two cases of separation and fragmentation of the medial epicondylar […]

  199. Iliotibial Band Friction Syndrome

    Clinical History: A 30-year-old female distance runner presents with lateral knee pain. (1a) T1-weighted and (1b) STIR coronal images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Iliotibial band friction syndrome. Discussion Iliotibial band friction syndrome (ITBFS) is a frequently encountered overuse injury caused by repetitive friction between the iliotibial band […]

  200. Pigmented Villonodular Synovitis

    Clinical History: A 39 year-old female presents with right knee pain and swelling. (1a) Proton density weighted axial and (1b) gradient-echo weighted sagittal images are provided. What are the findings? What is the diagnosis? Findings Diagnosis Pigmented villonodular synovitis Discussion Pigmented villonodular synovitis (PVNS) is a benign proliferative synovial lesion of uncertain etiology.1 PVNS is […]

  201. Adhesive Capsulitis

    Clinical History: 54-year-old female with decreased range of motion and right shoulder pain increasing over the last 2 months. (1a) Sagittal T2-weighted and (1b) Coronal fat-suppressed T2-weighted images of the right shoulder are provided. What are the findings? What is your diagnosis? Findings Diagnosis Adhesive Capsulitis Discussion Adhesive capsulitis or “frozen shoulder” is an inflammatory […]

  202. Posterior Root Tear of the Medial Meniscus

    Clinical History: 53 year old female with 2-3 weeks of knee pain and instability. Fat suppressed proton density coronal and sagittal images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Posterior root tear of the medial meniscus. Discussion Tears of the meniscal root can be easily overlooked on MR examinations, but […]

  203. Achilles Tendinosis & Achilles Tendon Rupture

    Clinical History: A jolly, white-haired gentlemen presented on December 23rd with sudden onset of pain at the back of the heel after pushing a sled (1a). (1b) T1-weighted and (1c) fat-suppressed T2-weighted sagittal images of the ankle are provided. What are the findings? What is your diagnosis? Findings Diagnosis Chronic Achilles tendinosis and Achilles tendon […]

  204. Biceps Tendon Rupture Elbow

    This clinic was updated on January 2, 2014. See the updated version here. Clinical History: 45 year-old male experienced a “pop” and acute onset pain while lifting a heavy bucket. What are the findings? What is your diagnosis? Findings Diagnosis Distal Biceps Tendon Rupture. Discussion Ruptures of the distal biceps tendon are seen most commonly […]

  205. Tarsal Tunnel Syndrome

    Clinical History: 34 year old female complains of medial foot pain and numbness. (1a) A T1 weighted axial image and (1b) fat-suppressed T2 weighted sagittal image are provided. What are the findings? What is your diagnosis? Findings Diagnosis Ganglion cyst resulting in tarsal tunnel syndrome. Discussion Numerous entrapment neuropathies have been described in the musculoskeletal […]

  206. De Quervain’s Tenosynovitis

    Clinical History: Dorsoradial wrist pain in a 50 year-old golfer. Axial (1a) fat-suppressed proton density and (1b) T1-weighted images through the distal radius are provided. What are the findings? What is your diagnosis? Findings Diagnosis De Quervain’s Tenosynovitis. Discussion Tenosynovitis and tendinosis of the abductor pollicis longus (APL) and extensor pollicis brevis (EPB) tendons is […]

  207. Lesser Tuberosity Avulsion Fracture

    Clinical History: A 14 year old water polo player presents with chronic anterior shoulder pain. Axial proton density (1a) and oblique sagittal (1b) T1-weighted images are submitted for review. What are the findings? What is your diagnosis? Findings Diagnosis Isolated avulsion fracture of the lesser tuberosity. Discussion Isolated fractures of the lesser tuberosity of the […]

  208. HAGL Lesion

    Clinical History: A 28 year-old male sustained a shoulder injury while playing hockey. (1a) Fat-suppressed T2-weighted coronal-oblique and (1b) fat-suppressed proton density-weighted axial images are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Humeral avulsion of the inferior glenohumeral ligament (The HAGL lesion). Discussion Recurrent anterior glenohumeral instability is a […]

  209. Gluteus Minimus Tear & Trochanteric Bursitis

    Clinical History: 70 year-old female with chronic left hip pain. Coronal T1-weighted (1a), Coronal STIR (1b), and Axial T2-weighted (1c) images are provided. What are the findings? What is your diagnosis?   Findings   Diagnosis Gluteus minimus tear of the left hip with associated trochanteric bursitis. Discussion Lateral hip pain is frequently a challenging diagnostic […]

  210. ACL Ganglion Cysts

    Clinical History: 37 year-old male with no known injury, complaining of diffuse knee pain and stiffness, worsening over the last 3 months. Sagittal T1-weighted (1a) and fat-suppressed proton density-weighted (1b) images are provided. What are the findings? What is your diagnosis?     Findings       Diagnosis Anterior cruciate ligament ganglion cyst with intraosseous […]

  211. Rotator Cuff Tear with Biceps Tendon Dislocation

    Clinical History: A 52 year old man presents with chronic shoulder pain. Oblique coronal fat-suppressed T2-weighted (1a) and axial fat-suppressed proton density-weighted (1b) images are provided. What are the findings? What is your diagnosis?   Findings     Diagnosis Full thickness tear of the subscapularis tendon with medial dislocation of the long tendon of the […]

  212. Subchondral Insufficiency Fracture of the Knee

    Clinical History: 78 year-old female with recent increase in right knee pain and no history of trauma. T1-weighted sagittal (1a) and fat-suppressed T2-weighted coronal (1b) images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Subchondral insufficiency fracture along the weight-bearing surface of the medial femoral condyle. Discussion After reviewing the images […]

  213. Free Disc Fragment

    Clinical History: 55 year-old man with right leg pain. T1-weighted sagittal (1a), T2-weighted sagittal (1b) and T2-weighted axial (1c) images are provided. What is your diagnosis? Findings Answer Right paracentral free disc fragment from L5-S1, resulting in mass effect on the right S1 nerve root. Discussion An important, frequently difficult to diagnose, type of disc […]

  214. Cartilage Defect of Lateral Femoral Condyle

    Clinical History: 40 year-old male status-post twisting injury–now with knee pain and clicking. Fat-suppressed water excitation sagittal (1a) and fat-suppressed proton density weighted fast spin-echo coronal (1b) images are provided. What are the findings? What is your diagnosis? Findings Answer Full-thickness cartilage defect at the posterior weight-bearing surface of the lateral femoral condyle. Discussion With the […]

  215. Lateral Epicondylitis

    Clinical history: 40 year old male carpenter with lateral elbow pain. Fat-suppressed T2-weighted coronal (1a) and axial (1b) images demonstrate the abnormality. What is your diagnosis?   Answer Diagnosis Lateral epicondylitis Discussion The lateral elbow is a frequent site of work and sports-related overuse injury. Lateral epicondylitis is the most commonly encountered overuse syndrome in […]

  216. Wrisberg Pseudotear and Wrisberg Rip

    Clinical History: 16 year-old male s/p soccer injury with an ACL tear. Web Clinic Challenge: Fat-suppressed proton density sagittal images (1a,1b) are provided. Note the meniscofemoral ligament of Wrisberg (arrow) coursing behind the PCL on image (1a). The edematous and lax ACL is readily apparent. In this case, the ACL tear resulted from a tibial […]

  217. Ankle Ligamentous Injury

    Clinical History: 32 year-old male s/p twisting injury while playing basketball. Fat-suppressed T2-weighted axial (1a) and proton density weighted coronal (1b) images are provided. What are the findings? What is your diagnosis? Findings Diagnosis Grade III ankle sprain with disruption of the anterior talofibular ligament and the calcaneofibular ligament. Discussion Ligamentous injuries of the ankle, […]

  218. Suprascapular Nerve Entrapment

    Clinical History: 35 year-old male weight-lifter with shoulder pain. T1-weighted coronal (1a) and T2-weighted fat-suppressed coronal (1b) and sagittal (1c) images are provided. What is your diagnosis? Findings Diagnosis Entrapment of the suprascapular nerve caused by a ganglion cyst in the supraspinatus fossa and spinoglenoid notch, resulting in denervation of the infraspinatus muscle. Discussion MRI […]

  219. Posterolateral Corner Injury

    Clinical History: 20 year-old male injured playing soccer. Sagittal proton-density weighted fat-suppressed images are provided. What are the findings? What is your diagnosis? Findings   Diagnosis Anterior cruciate ligament tear with associated posterolateral corner injury. Discussion Posterolateral stability of the knee is maintained by a complex and variable arrangement of ligaments and tendons known as […]

  220. Bucket-handle Tear of the Medial Meniscus

    Clinical History: 35 year old male with medial knee pain and locking. Gradient-echo sagittal (1a,1b) and STIR coronal (1c) images are provided. What are the findings? What is your diagnosis?   Findings       Diagnosis Bucket-handle tear of the medial meniscus. Discussion Bucket-handle tears are so named because the inner rim of the meniscus […]

  221. Kienbock’s Disease

    Clinical History: 32 year-old construction worker with persistent wrist pain. A gradient-echo coronal MR image of the wrist is provided below (1a). What are the findings? What is your diagnosis?   Answer     Findings Diffusely decreased signal intensity is present within the lunate (arrow). Negative ulnar variance with compensatory thickening of the triangular fibrocartilage […]