Locked posterior shoulder dislocation treated by arthroscopic tenodesis of the subscapularis in the reversed Hill-Sachs lesion

Report of a case of locked posterior shoulder dislocation, diagnosed after 3 weeks with an impression fracture involving almost 30% of the humeral head. Closed reduction was not stable. Shoulder arthroscopy confirmed the fracture and the unstable character of the dislocation. The subscapularis tendon was attached in this lesion using two suture anchors. Immediate shoulder stability was obtained. The 6-month follow-up was good, and the shoulder became stable and pain free. Arthroscopic tenodesis of the subscapularis may be an alternative to the McLaughlin technique in locked posterior shoulder dislocations involving 20-40% of the humeral head in cases presenting within 6 months after the initial episode.