Hill-Sachs lesion is described as which of the following?

Hill-Sachs lesion is described as which of the following?

• A. Compression fracture of posterosuperior aspect of the humeral head causing anterior-inferior shoulder dislocation.
• B. Fracture of the anterior glenoid rim with labral detachment.
• C. Avulsion fracture of the greater tuberosity.
• D. Fracture of the acromion process.

Answer: (A)

Hill-Sachs lesion happens when the humeral head is forcefully driven against the glenoid rim during an anterior shoulder dislocation. This impact creates a compression fracture on the posterolateral (back and outer) portion of the humeral head. The defect is on the humeral head opposite the direction of dislocation and can contribute to recurrent instability if it engages the glenoid during movement, especially with abduction and external rotation. Other common shoulder injuries describe different problems: a Bankart lesion involves a fracture of the glenoid rim with labral detachment; an avulsion of the greater tuberosity is a separate fracture at the shoulder’s tuberosity where rotator cuff or deltoid forces pull; a fracture of the acromion is unrelated to the humeral head impaction seen in Hill-Sachs.

Hill-Sachs lesion happens when the humeral head is forcefully driven against the glenoid rim during an anterior shoulder dislocation. This impact creates a compression fracture on the posterolateral (back and outer) portion of the humeral head. The defect is on the humeral head opposite the direction of dislocation and can contribute to recurrent instability if it engages the glenoid during movement, especially with abduction and external rotation.

Other common shoulder injuries describe different problems: a Bankart lesion involves a fracture of the glenoid rim with labral detachment; an avulsion of the greater tuberosity is a separate fracture at the shoulder’s tuberosity where rotator cuff or deltoid forces pull; a fracture of the acromion is unrelated to the humeral head impaction seen in Hill-Sachs.