What does ALPSA stand for when identifying tears causing instability of the glenohumeral joint?

ALPSA stands for Anterior Labrum Periosteal Sleeve Avulsion. This term is crucial in the context of glenohumeral joint instability, as it describes a specific type of injury where the anterior labrum is avulsed from the glenoid, but the periosteum remains attached to the underlying bone. This injury is significant because it can lead to recurrent shoulder dislocations and instability.

Recognizing an ALPSA lesion is important for proper diagnosis and treatment planning, as it often requires surgical intervention to stabilize the joint effectively. Understanding this terminology helps healthcare providers communicate clearly about shoulder injuries and formulate appropriate management strategies. In contrast, the other terms provided do not accurately describe this specific type of labral injury, making them less relevant in discussions about glenohumeral joint instability.