Humeral avulsion of the glenohumeral ligament – Wikipedia

Humeral avulsion of the glenohumeral ligament (HAGL) is defined as an avulsion (tearing away) of the inferior glenohumeral ligament from the anatomic neck of the humerus. In other words, it occurs when we have disruption of the ligaments that join the humerus to the glenoid.HAGL tends to occur in 7.5-9.3% of cases of anterior shoulder instability. Making it an uncommon cause of anterior …

: https://en.wikipedia.org/wiki/Humeral_Avulsion_of_the_Glenohumeral_Ligament