Massive, contracted crescentic rotator cuff tear. A, Superior view. B, Double-interval slide is performed by first doing anterior interval slide, then posterior interval slide releasing interval between supraspinatus (SS) and infraspinatus (IS). C, After release, improved mobility (arrows) of supraspinatus tendon and infraspinatus and teres minor tendons posteriorly. D, Supraspinatus tendon repaired to lateral bone bed in tension-free manner, and infraspinatus and teres minor tendons advanced laterally. E, Residual defect closed with side-to-side sutures. CHL, Coracohumeral ligament; Sub, subscapularis tendon.