The double-contrast shoulder arthrogram. A review of 158 studies.

Experience with double-contrast arthrography indicates it is superior to the single-contrast technique. First, the double-contrast study provides additional information on the width of rotator cuff tears and on degeneration in the tendons. This information is valuable in choosing surgical candidates and electing the best surgical incision. Second, the air-distended capsule permits visualization of the entire intra-articular portion of the biceps tendon. Third, improved visualization of the articular cartilages is important in evaluating patients with previous anterior shoulder dislocations or inflammatory arthritis.