Chronic L-shaped tear. A, Superior view of chronic L-shaped tear, which has assumed U-shaped configuration. B, L-shaped tears show excellent mobility from anterior-to-posterior direction; however, one tear margin (usually posterior leaf) is more mobile. Tears should be initially repaired using side-to-side sutures by using principle of margin convergence. C, Converged margin is repaired to bone in tension-free manner. A, anatomic insertion site of supraspinatus tendon (A1); CHL, Coracohumeral ligament; IS, infraspinatus tendon; RI, rotator interval; SS, supraspinatus tendon; Sub, subscapularis tendon.