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Sports Medicine
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Internal Impingement - Posterosuperior Glenoid Pathology

Shoulder Sports Injuries

A 24-year-old professional baseball pitcher presents with 18 months of progressive posterior shoulder pain during the late cocking phase of throwing. He reports decreased velocity and accuracy. Examination reveals posterior shoulder tenderness, positive relocation test, and pain with the arm in 90° abduction and maximum external rotation. MR arthrogram shows posterosuperior labral fraying, partial-thickness articular-sided supraspinatus tear, and posterosuperior glenoid cystic changes. Regarding internal impingement:

Mark each as TRUE or FALSE

A

Internal impingement occurs when the posterosuperior rotator cuff (supraspinatus and infraspinatus) ...

B

The pathological triad of internal impingement includes: 1) posterosuperior labral lesions (type II ...

C

Internal impingement primarily affects the anterior labrum and subacromial space; it is most common ...

D

GIRD (Glenohumeral Internal Rotation Deficit) is defined as greater than 20° loss of internal rotati...

E

Non-operative treatment focusing on posterior capsular stretching (sleeper stretches, cross-body add...

Answer the questions to see explanations

Click T (True) or F (False) for each option