“…Posterior labral tears are not always readily apparent on either magnetic resonance imaging or magnetic resonance arthrogram. 2 Furthermore, anterior shoulder pain and tenderness along the bicipital groove are commonly reported. 3 Radiographic and advanced imaging parameters such as increased glenoid retroversion, glenoid dysplasia, increased posterior capsular area, and increased posterior acromial height and decreased posterior acromial slope are associated with posterior shoulder instability and can aid clinicians in the diagnosis.…”