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Age / Sex : 27 / M
Age/Sex: 27/M
C.C.: Rt shoulder pain, baseball pitcher
1) What is your impression?
Two weeks later, you can see the final diagnosis with a brief discussion of this case.
* Send Application Answers to Ja-Young Choi, MD (drchoi01@gmail.com)
Courtesy: Sung Gyu Moon, MD., Konkuk University Hospital
Diagnosis: posterosuperior glenoid impingement syndrome
Discussion
Discussion:
Posterosuperior impingement refers to abnormalities caused by friction between the posterosuperior labrum and glenoid and the undersurface of the supraspinatus as the shoulder is moved through the abduction external rotation(ABER) position. This type of impingement typically is seen in overhead and throwing athletes and may occur without or with glenohumeral instability. MR imaging demonstrates degeneration and tearing of the posterosuperior glenoid labrum, articular surface fraying, and partial-thickness tearing of the supraspinatus, occasionally as far posteriorly as its junction with the infraspinatus (posterior interval). Additional findings may include glenoid cysts and osteochondral impaction fractures of the greater tuberosity. Because of the location of these lesions, MR arthrography with the patient in the ABER position provides excellent visualization of the affected regions of the posterosuperior labrum, glenoid, and articular surface of the rotator cuff.
Reference:
MR imaging of the rotator cuff - MRICNA 2004
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