The major abnormality is a gross musculotendinous tear of infraspinatus. It is almost complete. Considerable fluid within the defect and surrounding soft tissue swelling.
The supraspinatus tendon is also abnormal. It is swollen and contains a full thickness tear posteriorly. Anteriorly the tendon remains intact.
There is moderate AC arthropathy with upward displacement of the clavicular head in relation to the acromion. Coraco-clavicular ligament seems intact albeit elongated presumably due to an old injury with AC subluxation.