59-year-old male patient with left shoulder pain, has known arthritis, not responsive to injections. Evaluate left shoulder for rotator cuff tear. ROTATOR CUFF: Linear high signal intensity within the supraspinatus extending from the myotendinous junction into the distal fibers of the tendon is compatible with intrasubstance tearing. There is additional high signal intensity within the substance of the tendon at its insertion on the humerus consistent with concealed insertional tearing. No full-thickness tear is identified. The supraspinatus muscle appears normal. There is insertional tearing of the posterior fibers of the infraspinatus tendon without full-thickness tear. The infraspinatus muscle appears normal. The teres minor muscle and tendon are intact. There is interstitial tearing of the inferior fibers of the subscapularis tendon without full-thickness tear. The subscapularis muscle otherwise appears normal.SUPRASPINATUS OUTLET: Marked osteoarthritis affects the acromioclavicular joint with large osteophytes inferiorly causing impression on the supraspinatus. No significant fluid is identified within the subdeltoid/subacromial bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: There are large osteophytes along the inferior aspect of the humeral head. There is severe glenohumeral joint space narrowing with bone on bone apposition and total loss of the articular cartilage of the lower half of the glenoid. Subchondral cyst formation is noted within the glenoid. There is probable degenerative tearing of the posterior labrum. Degenerative cysts are noted within the humeral head at the supraspinatus and infraspinatus insertions.BICEPS TENDON: The long head of the biceps tendon appears intact. ADDITIONAL
1. Marked osteoarthritis of the glenohumeral and acromioclavicular joints.2.Tearing of the supraspinatus, infraspinatus, and subscapularis tendons without full thickness rotator cuff tear. 