58-year-old male with right shoulder pain for 2 weeks. ROTATOR CUFF: There is increased signal intensity within the supraspinatus at its insertion, indicating a tear that disrupts the bursal surface fibers and results in minimal retraction of these fibers. The tear appears to involve just over 50% of the tendon width, but the articular surface fibers appear intact. This tear appears to extend posteriorly to involve the anterior fibers of the infraspinatus and measures approximately 1.5 cm in the AP dimension. There is intermediate signal intensity within the supraspinatus indicating mild tendinosis. The supraspinatus and infraspinatus muscles appear intact. There is moderate fatty atrophy of the teres minor muscle although the tendon appears intact. There is focal fatty atrophy along the myotendinous junction of the subscapularis, but the tendon appears intact. The subscapularis muscle otherwise appears normal.SUPRASPINATUS OUTLET: Mild osteoarthritis affects the acromioclavicular joint. No frank fluid is identified within the subacromial subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: The glenohumeral joint alignment is anatomic. We see no fluid-filled labral tear, although there is mild increased signal within the superior labrum which may reflect degeneration.BICEPS TENDON: The tendon of the long head of the biceps appears intact.
1. Insertional tear of the distal supraspinatus/infraspinatus tendons involving the bursal surface fibers as described above.2. Fatty atrophy of the teres minor with a normal-appearing tendon.3. Acromioclavicular joint osteoarthritis and other findings as described above.