Hill-Sachs lesion is found on which part of the humeral head?

Hill-Sachs lesion is found on which part of the humeral head?

• A. Anterior lateral
• B. Posterior lateral
• C. Anterior medial
• D. Posterior medial

Answer: (B)

Hill-Sachs lesions are compression injuries of the humeral head that occur during anterior shoulder dislocations. As the head is driven forward into the glenoid, the anteroinferior rim of the glenoid clashes with the posterolateral surface of the humeral head, creating a dent in that region. That’s why the defect lies on the posterior-lateral aspect of the humeral head. The anterior or medial surfaces aren’t the sites of this characteristic lesion because the impact during an anterior dislocation targets the posterolateral quadrant. This location helps explain how the dented area can contribute to recurrent instability as the head moves and engages with the glenoid rim.

Hill-Sachs lesions are compression injuries of the humeral head that occur during anterior shoulder dislocations. As the head is driven forward into the glenoid, the anteroinferior rim of the glenoid clashes with the posterolateral surface of the humeral head, creating a dent in that region. That’s why the defect lies on the posterior-lateral aspect of the humeral head. The anterior or medial surfaces aren’t the sites of this characteristic lesion because the impact during an anterior dislocation targets the posterolateral quadrant. This location helps explain how the dented area can contribute to recurrent instability as the head moves and engages with the glenoid rim.