Arthroscopic reconstruction of posterior glenoid bone loss with distal tibia allograft

Posterior glenohumeral instability is rare, accounting for approximately 5% of cases of shoulder instability. Although bone loss is implicated in most cases of recurrent anterior glenohumeral instability, the impact of glenoid bone loss on posterior instability is poorly understood. Specifically, the quantity of posterior glenoid bone loss that would prohibit the success of a posterior soft tissue stabilization procedure alone for recurrent posterior instability is unknown.