52-year-old male with a weak supraspinatus and week and external rotation. Presents with pain in the right shoulder. Evaluate cuff. ROTATOR CUFF: There is a full-thickness near complete tear of the infraspinatus tendon measuring between 1 and 1.5 cm in the AP dimension with up to 1.5 cm of proximal retraction. A small band of the posterior aspect of the infraspinatus tendon appears intact and can be traced to its insertion on the greater tuberosity. There is loss of bulk of the infraspinatus muscle. We suspect that this tear involves the posterior fibers of the supraspinatus tendon. The remainder of the supraspinatus tendon appears thinned, suggesting chronic attritional tearing. There is mild fatty infiltration along the myotendinous junction, but otherwise the supraspinatus muscle appears normal. The teres minor muscle and tendon appear intact. The subscapularis muscle and tendon appear intact.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: There is mild intermediate signal intensity within the superior glenoid labrum suggesting degeneration, but we see no fluid-filled tear. The glenohumeral joint alignment is within normal limits. BICEPS TENDON: The tendon of the long head of the biceps appears intact. ADDITIONAL
Full-thickness rotator cuff tear, predominantly involving the infraspinatus tendon, with chronic attritional thinning of the majority of the supraspinatus tendon as described above.