State of the art for treatment of bony defects around anterior shoulder instability—the American perspective; [Neuester Stand der Behandlung knöcherner Defekte im Bereich der vorderen Schulterinstabilität – aus amerikanischer Sicht]

While arthroscopic Bankart repair yields high success rates, bone loss on the glenoid or humeral head can portend a poor outcome. The authors recommend a thorough evaluation including computed tomography (CT) scanning to best evaluate the amount of bone loss. Multiple studies have shown that the outcomes of revision stabilization procedures are inferior to the respective primary procedure; thus, it is of paramount importance to select the correct index procedure to optimize patient outcome. The authors present the American perspective on treating shoulder instability. For patients with a small on-track Hill Sachs lesion and less than 10 % glenoid bone loss, an isolated arthroscopic Bankart repair is appropriate. This procedure is also recommended for bony Bankart lesions, as well as in overhead throwing athletes. With an engaging Hill Sachs lesion and less than 15 % glenoid bone loss, the authors recommend the addition of a remplissage to the arthroscopic Bankart repair. For patients with up to 15 % bone loss or following a failed previous arthroscopic repair, the authors advocate for open Bankart repair. They recommend Latarjet in patients with a non-engaging Hill Sachs lesion greater than 15 % bone loss. Patients with bone loss over 30 % would benefit from bone grafting with iliac crest autograft or distal tibia allograft for stabilization. In summary, the authors believe that the index procedure provides an opportunity to optimize patient outcome and careful consideration of the treatment options is warranted. © 2021, The Author(s).