Reason: cystic abnormality glenoid History: pain ROTATOR CUFF: The supraspinatus and infraspinatus muscles and tendons appear intact. The teres minor muscle and tendon appear intact. There is thickening of the subscapularis at its insertion indicating tendinosis. Additionally, there is more focal increased signal intensity indicating an interstitial tear that may extend to the articular surface.SUPRASPINATUS OUTLET: No significant fluid is identified within the subacromial/subdeltoid bursa. The acromioclavicular joint is normal in appearance.GLENOHUMERAL JOINT AND GLENOID LABRUM: There is tearing of the majority of the posterior labrum with paralabral cyst formation that extends into the suprascapular and spinal glenoid notch. This posterior labral tear extends into the superior labrum and there is an enlarged anterior labrum with increased signal intensity that may represent mucoid degeneration and degenerative tearing with what appears to be labral tissue interposed between the glenoid and anterior half of the humeral head. There is also loss of the articular cartilage along the posterior aspect of the glenoid with mild scalloping of the articular surface of the posterior aspect of the glenoid that likely corresponds to the abnormality seen on recent radiographs. There is slight posterior subluxation of the humeral head relative to the center of the glenoid. There is a small amount of fluid within the glenohumeral joint but no large effusion.BICEPS TENDON: The tendon of the long head of the biceps appears intact within the limitations of a non arthrogram study.
1. Labral abnormalities as described above including a posterior labral tear with paralabral cyst formation. There is also loss of the articular cartilage along the posterior aspect of the glenoid with scalloping of the articular surface corresponding to the findings seen on recent radiographs.2. Partial-thickness insertional tear of the subscapularis tendon.