In anterior shoulder dislocation, which associated injuries are commonly present?

In anterior shoulder dislocation, which associated injuries are commonly present?

• A. Hill-Sachs lesion and Bankart fracture
• B. Colles fracture and Smith fracture
• C. Monteggia fracture
• D. Boxer's fracture

Answer: (A)

Anterior shoulder dislocation commonly injures structures at the front of the shoulder as the humeral head slides out of the glenoid. The classic associated injuries are a Bankart lesion and a Hill-Sachs lesion. A Bankart lesion is a tear or avulsion of the anteroinferior part of the glenoid labrum (often with a bony Bankart fracture of the glenoid rim), which contributes to recurrent instability. A Hill-Sachs lesion is a compression fracture of the posterolateral humeral head caused by its impact against the glenoid rim during dislocation. These two findings together explain the mechanism and consequences of an anterior dislocation and are the injuries most commonly seen. The other injuries listed occur in different contexts: Colles and Smith fractures involve the distal radius, a Monteggia fracture is a fracture of the ulna with radial head dislocation, and a Boxer's fracture is a fracture of the neck of the fifth metacarpal.

Anterior shoulder dislocation commonly injures structures at the front of the shoulder as the humeral head slides out of the glenoid. The classic associated injuries are a Bankart lesion and a Hill-Sachs lesion. A Bankart lesion is a tear or avulsion of the anteroinferior part of the glenoid labrum (often with a bony Bankart fracture of the glenoid rim), which contributes to recurrent instability. A Hill-Sachs lesion is a compression fracture of the posterolateral humeral head caused by its impact against the glenoid rim during dislocation. These two findings together explain the mechanism and consequences of an anterior dislocation and are the injuries most commonly seen.

The other injuries listed occur in different contexts: Colles and Smith fractures involve the distal radius, a Monteggia fracture is a fracture of the ulna with radial head dislocation, and a Boxer's fracture is a fracture of the neck of the fifth metacarpal.