80-year-old male with pain and weakness. Evaluate rotator cuff. ROTATOR CUFF: There is a full-thickness complete (or near-complete) tear of the supraspinatus tendon with retraction of the tendon to the top of the humeral head. The retracted tendon is thickened which may reflect tendinosis and delamination. There is mild fatty atrophy along the myotendinous junction, otherwise the supraspinatus muscle is within normal limits. There is increased signal intensity within the infraspinatus tendon at its insertion on the greater tuberosity suggesting tendinosis and perhaps mild concealed interstitial tearing with cyst formation in the underlying humeral head. There is fatty infiltration along the myotendinous junction of the infraspinatus muscle which otherwise appears normal. The teres minor tendon and muscle are normal in appearance. There is insertional tearing of the superior fibers of the subscapularis tendon with mild retraction. There is thickening and increased signal intensity of the remaining subscapularis tendon indicating tendinosis and additional undersurface tearing. There is mild fatty atrophy of the subscapularis muscle along the myotendinous junction.SUPRASPINATUS OUTLET: Mild osteoarthritis affects the acromioclavicular joint. There is a small amount of fluid within the subacromial/subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: Mild to moderate osteoarthritis affects the glenohumeral joint. Blunting and heterogeneous signal of the glenoid labrum is consistent with degeneration and chronic tearing. There is a small glenohumeral joint effusion and perhaps a small amount of fluid within the subcoracoid bursa as well. The glenohumeral joint alignment is within normal limits.BICEPS TENDON: There is medial subluxation/dislocation of the tendon of the long head of the biceps from the bicipital groove. The tendon itself is abnormally thinned with irregular margins, indicating extensive partial thickness tearing. There is distention of the biceps tendon sheath with fluid which may representing tenosynovitis or extension of fluid from the glenohumeral joint.ADDITIONAL
1. Complete retracted tear of the supraspinatus tendon.2. Insertional tear of the superior fibers of the subscapularis tendon with medial subluxation/dislocation and tearing of the long head of the biceps tendon.3. Osteoarthritis of the glenohumeral and acromioclavicular joints.