Shoulder instability Note that the examination is limited by motion artifact and by the patient's body habitus.ROTATOR CUFF: There is increased signal intensity within the infraspinatus tendon at its insertion upon the greater tuberosity indicating a combination of tendinosis and undersurface tearing. No full-thickness tear is identified. There is a small interstitial tear of the supraspinatus tendon but again there is no full-thickness tear identified. The supraspinatus and infraspinatus muscles are normal in caliber and signal. The teres minor and subscapularis muscles and tendons are intact.SUPRASPINATUS OUTLET: There is mild osteoarthritis of the acromioclavicular joint. There is no gadolinium or fluid within the subacromial subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: Alignment of the glenohumeral joint is normal. There is flattening of the posterolateral aspect of the humeral head indicating a Hill-Sachs deformity. There is truncation of the majority of the anterior labrum suggesting prior tearing with focal low signal intensity along the anterior margin of the scapular neck which may reflect displaced labral tissue (ALPSA lesion). There is attenuation of the superior labrum which may represent chronic attritional tearing but this is equivocal.BICEPS TENDON: No significant abnormality noted. ADDITIONAL
1. Limited examination secondary to motion artifact and patient body habitus. There is a Hill-Sachs deformity and attenuation of the anterior labrum reflecting chronic tearing and the sequela of prior anterior dislocation.2. Partial undersurface tearing of the infraspinatus tendon at its insertion on the greater tuberosity.