Bankart lesion is a tear of the anterior-inferior labrum typically occurring after which event?

Bankart lesion is a tear of the anterior-inferior labrum typically occurring after which event?

• A. Posterior Dislocation
• B. Anterior Dislocation
• C. Rotator Cuff Tear
• D. Glenoid Fracture

Answer: (B)

Bankart lesions arise when the anterior-inferior portion of the labrum is torn away from the glenoid rim due to a traumatic anterior dislocation of the shoulder. When the arm is forcefully driven outward and upward (often with abduction and external rotation), the humeral head moves anteriorly and inferiorly, shearing the labrum off the rim and disrupting the inferior glenohumeral ligament. This mechanism explains why the tear most commonly follows an anterior dislocation and contributes to recurrent shoulder instability. A posterior dislocation would cause a different, posterior-labral injury; rotator cuff tears and isolated glenoid fractures are not the classic cause of this specific labral tear.

Bankart lesions arise when the anterior-inferior portion of the labrum is torn away from the glenoid rim due to a traumatic anterior dislocation of the shoulder. When the arm is forcefully driven outward and upward (often with abduction and external rotation), the humeral head moves anteriorly and inferiorly, shearing the labrum off the rim and disrupting the inferior glenohumeral ligament. This mechanism explains why the tear most commonly follows an anterior dislocation and contributes to recurrent shoulder instability. A posterior dislocation would cause a different, posterior-labral injury; rotator cuff tears and isolated glenoid fractures are not the classic cause of this specific labral tear.