Shoulder pain. Evaluate for rotator cuff tear or biceps tear. ROTATOR CUFF: There is increased signal intensity replacing the distal infraspinatus tendon at its insertion on the greater tuberosity suggesting full thickness tear. The abnormal signal intensity appears to extend through the entire thickness of the tendon and involves the majority of the tendon in the AP dimension indicating a near complete or complete tear. There also appears to be delamination of the undersurface fibers that are retracted by approximately 1 cm. There is mild edema in the underlying greater tuberosity. There is mild fatty atrophy along the myotendinous junction of the infraspinatus. The aforementioned tearing appears to extend into the posterior fibers of the supraspinatus with additional interstitial tearing involving the distal 1.5 cm of the supraspinatus. The supraspinatus muscle appears intact. Teres muscle and tendon muscle are intact. The subscapularis muscle and tendon are intact. SUPRASPINATUS OUTLET: There is mild to moderate osteoarthritis at the acromioclavicular joint. We see no frank fluid in the subacromial/subdeltoid bursa. GLENOHUMERAL JOINT AND GLENOID LABRUM: The glenohumeral joint alignment is normal. The glenoid labrum appears normal given the limitations of a non-arthrogram study. There is no joint effusion. BICEPS TENDON: The tendon of the long head of the biceps appears normal given the limitations of a non-arthrogram study.
1.Full thickness insertional tear of the infraspinatus with mild retraction and extension into the supraspinatus as above. 2.Acromioclavicular joint osteoarthritis3.Normal-appearing biceps tendon without tear. 