Transposition of coracoacromial ligament to humerus in treatment of vertical shoulder joint instability. Clinical applicability of experimental technique.

Treatment of experimental distal subluxation in the shoulder joint was achieved by transposition of the coracoacromial ligament and its bony attachment from the acromion to the lesser tuberosity of the humerus. This transposition also reduced external rotation in the first 40 degrees of abduction. The method, which was applied in two clinical cases of distal subluxation, proves reasonable from a biomechanical point of view and yields satisfactory primary clinical results.