Arthroscopic Repair of a Glenoid Avulsion of the Glenohumeral Ligament.

Injury to the glenohumeral capsulolabral complex is the critical lesion in anterior shoulder instability. Various injury patterns have been described including the classic Bankart lesion, the bony Bankart lesion, and humeral avulsion of the glenohumeral ligament. A rare injury variant is a glenoid avulsion of the glenohumeral ligament (GAGL lesion). Careful patient setup and surgical technique are required to identify and arthroscopically repair these lesions. We describe a suture anchor-based arthroscopic GAGL repair performed with the patient in the lateral decubitus position through standard anterior and posterior portals and an accessory posterolateral 7-o'clock portal.