Arthroscopic Labral Repair in the Setting of Recurrent Posterior Shoulder Instability.

Posterior shoulder instability, although relatively rare in the general population, is more commonly seen in athletes, especially those in contact sports. Although nonoperative treatment has been associated with satisfactory results in the setting of posterior shoulder instability, conservative management may ultimately fail and lead to recurrence particularly in young, male patients. Both arthroscopic and open repair techniques to address posterior instability have been described, with each showing positive patient-reported outcomes, low risk of recurrence, and considerably high return-to-sport rates. In particular, arthroscopic treatment includes the following: capsular plication and knotted and/or knotless suture anchor fixation. The purpose of this technique is to describe our preferred technique to treat recurrent posterior shoulder instability through arthroscopic labral repair using knotless suture anchor fixation.