Posterior carpometacarpal ligament

Posterior Carpometacarpal Ligament

The Posterior Carpometacarpal Ligament is a fibrous band of connective tissue that connects the carpal bones to the metacarpal bones in the human hand. It is one of several ligaments that contribute to the stability and flexibility of the wrist joint.

Anatomy

The Posterior Carpometacarpal Ligament is located on the dorsal (back) side of the hand. It extends from the distal row of carpal bones to the bases of the metacarpal bones. This ligament is particularly strong and thick over the second and third metacarpals, which are the bones leading to the index and middle fingers.

Function

The primary function of the Posterior Carpometacarpal Ligament is to stabilize the wrist joint and prevent excessive movement that could lead to injury. It also contributes to the flexibility of the wrist, allowing for a wide range of motion in various directions.

Clinical Significance

Injury to the Posterior Carpometacarpal Ligament can result in wrist instability, pain, and reduced range of motion. Such injuries are often caused by trauma, such as a fall on an outstretched hand, or by repetitive strain. Treatment may involve rest, immobilization, physical therapy, or in severe cases, surgery.

See Also

• Carpal bones
• Metacarpal bones
• Wrist joint
• Ligament