Bankart’s lesion involves the___________ of the glenoid labrum
**Core Concept**
Bankart's lesion is a type of injury to the glenoid labrum, which is a cartilaginous structure surrounding the glenoid cavity of the scapula. It is a common injury in anterior shoulder dislocations, where the humeral head is displaced anteriorly and inferiorly, leading to a tear in the labrum.
**Why the Correct Answer is Right**
The correct answer is related to the location of the labral tear in Bankart's lesion. The injury typically involves a tear in the anterior-inferior aspect of the glenoid labrum, which is the portion of the labrum that is most susceptible to injury in anterior shoulder dislocations. This is because the humeral head is most likely to displace in an anterior and inferior direction, causing the labrum to be stretched and eventually torn.
**Why Each Wrong Option is Incorrect**
**Option A:** The posterior aspect of the glenoid labrum is not typically involved in Bankart's lesion.
**Option B:** The superior aspect of the glenoid labrum is not commonly affected in Bankart's lesion.
**Option C:** The posterior-inferior aspect of the glenoid labrum is not typically involved in Bankart's lesion.
**Clinical Pearl / High-Yield Fact**
Bankart's lesion is often associated with anterior shoulder instability, which can lead to recurrent dislocations and decreased range of motion in the affected shoulder.
**Correct Answer:** A. Anterior-inferior aspect.