Arthroscopic rotator cuff interval capsular closure

Closure of the rotator cuff interval is an important component of open stab ilization techniques in shoulder surgery. This study describes a technique in which the deep layer of the capsule within the rotator cuff interval is closed arthroscopically. The effect of closure of this capsule within the r otator cuff interval on glenohumeral motion also is quantified. Sutures were placed from the superior glenohumeral ligament to the middle g lenohumeral ligament and tied intra-articularly in fresh-frozen cadaveric s houlders. Closure of the interval capsule resulted in statistically signifi cant limitation of humeral elevation, external rotation, and extension. Art hroscopic closure of the deep layer of the rotator cuff interval capsule pr oduced a visible superior shifting of the middle and inferior glenohumeral ligaments and imbricated the anterosuperior capsule of the shoulder. In add ition, this procedure can be performed in conjunction with arthroscopic cap sulolabral reconstruction.