Left shoulder pain ROTATOR CUFF: There is extensive cyst formation adjacent to and within the supraspinatus muscle with extension of these cysts into the suprascapular notch. The fibers of the supraspinatus tendon can be traced to its insertion upon the greater tuberosity although there is diffuse thickening of the tendon likely representing chronic attritional tearing. A more focal full-thickness defect of the supraspinatus tendon is noted at the apex of the humeral head. There is moderate to severe fatty atrophy of the remaining supraspinatus muscle.There is moderate to severe fatty atrophy of the infraspinatus muscle although the tendon itself can be traced to its insertion on the greater tuberosity. The atrophy of the muscle may be secondary to compression of the nerve within the suprascapular notch. The teres minor tendon and muscle are intact. There is mild tendinosis and minimal fatty atrophy of the subscapularis tendon and muscle respectively.SUPRASPINATUS OUTLET: There is mild osteoarthritis of the acromioclavicular joint. The humeral head is high riding and there is a small amount of fluid/inflammation within the subdeltoid bursa.GLENOHUMERAL JOINT AND GLENOID LABRUM: There is severe osteoarthritis of the glenohumeral joint with bone-on-bone apposition and extensive subchondral cystic changes. There is diffuse degenerative tearing of the labrum. There is a small joint effusion present, possibly with a component of mild synovitis, and multiple loose bodies are noted within the axillary and subscapular recesses.BICEPS TENDON: The biceps tendon appears slightly attenuated but is otherwise intact.
1. Severe osteoarthritis of the glenohumeral joint with multiple loose bodies.2. Cystic replacement of the supraspinatus muscle with extension of these cysts into the suprascapular notch. This likely results in impingement upon the nerves supplying the infraspinatus and supraspinatus muscles leading to fatty atrophy. There is also thinning of the supraspinatus tendon likely reflecting chronic attritional tearing with what appears to be a more focal full-thickness defect at the apex of the humeral head.3. Additional findings further detailed above.