Arthroscopic Humeral Avulsion of the Glenohumeral Ligament (HAGL) Repair Utilized Accessory Posterior Portal in the Beach-Chair Position

Shoulder instability, often associated with both soft tissue and bone lesions, can result in shoulder pain and dysfunction. To address this, the combined procedure of a Bankart repair in conjunction with humeral avulsion of the glenohumeral ligament (HAGL) repair aims to minimize failure rates in a single procedure. While HAGL repair is imperative for preventing recurrent instability, there remains a lack of consensus on the optimal surgical technique. This Technical Note aims to elucidate a surgical approach for addressing and repairing HAGL lesions using arthroscopy, specifically employing a combined posterior viewing portal and posteroinferior working portal in the beach-chair position.