Shoulder Instability: Interobserver and Intraobserver Agreement in the Assessment of Labral Tears.

Background: The glenohumeral joint combines large range of motion and insufficient bony stabilization, making it susceptible to instability and dislocations. Arthroscopic surgery is routinely used as a diagnostic tool and has been considered the gold standard for the diagnosis of shoulder lesions. However, several studies have demonstrated variability in intraobserver and interobserver agreement.