Bennett's fracture

BennettFracMark

BennettFracRepaid

Bennett's fracture is a fracture of the base of the first metacarpal bone which extends into the carpometacarpal (CMC) joint. This injury is common and typically results from a forceful impact to a partially closed fist, such as punching a hard object or falling onto an outstretched hand. The fracture is named after Edward Hallaran Bennett, an Irish surgeon who first described it in 1882.

Causes

Bennett's fracture is usually caused by a direct blow to the thumb, resulting in axial force applied to the metacarpal while it is in partial flexion. This mechanism of injury is often seen in sports, physical altercations, and accidents where the thumb is subjected to sudden, forceful impacts.

Symptoms and Diagnosis

The primary symptoms of a Bennett's fracture include pain at the base of the thumb, swelling, and limited mobility of the thumb. Bruising and deformity may also be present, indicating a more severe injury. Diagnosis is typically confirmed through X-ray imaging, which can reveal the extent of the fracture and any displacement of the bone.

Treatment

Treatment of Bennett's fracture depends on the severity and displacement of the fracture. Non-displaced fractures can often be treated conservatively with splinting or casting to immobilize the thumb and allow the bone to heal. However, displaced fractures usually require surgical intervention to realign the bones and stabilize the joint, often involving the use of pins, screws, or plates.

Complications

If not treated properly, Bennett's fracture can lead to complications such as arthritis of the thumb joint, decreased range of motion, and chronic pain. Early and appropriate treatment is crucial to minimize these risks and ensure optimal recovery.

Rehabilitation

Rehabilitation following treatment for Bennett's fracture involves physical therapy to restore strength and flexibility to the thumb. Exercises are gradually introduced to improve range of motion and dexterity. The duration of rehabilitation varies depending on the severity of the fracture and the treatment method used.

See Also

• Fracture
• Metacarpal bones
• Carpometacarpal joint
• Physical therapy