60-year-old male with history of muscle weakness and the proximal right arm. Evaluate for muscle inflammation. Although this examination is not protocoled for detailed evaluation of the shoulder, there is a massive tear of the rotator cuff involving the supraspinatus and infraspinatus tendons with retraction of tendon fibers. There is also fatty atrophy of the supraspinatus and infraspinatus musculature. The humeral head is high riding. There is a glenohumeral joint effusion as well as enhancement of the synovium indicating a mild synovitis. Fluid also extends into the subacromial/subdeltoid bursa as well as the biceps tendon sheath. There also appears to be a small amount of fluid in the subcoracoid bursa suggesting a mild bursitis. Evaluation of the glenoid labrum and biceps tendon are limited on this study. There is moderate acromioclavicular joint osteoarthritis. Mild fluid signal intensity and enhancement along the proximal fibers of one of the anterolateral tendons of the deltoid muscle is nonspecific but may represent prior myotendinous strain, and there is mild edema-type signal in the adjacent muscle. The remainder of the deltoid appears normal, as does the remaining musculature of the arm. Marrow signal is within normal limits. Evaluation of the elbow is limited but there appears to be mild osteoarthritis.
1.Massive rotator cuff tear and arthropathy as described above.2.Abnormal myotendinous signal of the deltoid as described above may reflect prior strain. 