Palmar ulnocarpal ligament

Palmar Ulnocarpal Ligament

Illustration of the Palmar Ulnocarpal Ligament (highlighted)

The Palmar Ulnocarpal Ligament is a fibrous band in the human wrist that connects the ulna to the carpal bones. It is one of the key components of the wrist joint, providing stability and limiting excessive movement.

Anatomy

The Palmar Ulnocarpal Ligament originates from the anterior margin of the triangular fibrocartilage complex (TFCC) and inserts into the lunate and triquetrum bones. It is composed of two parts: the ulnolunate and ulnotriquetral ligaments.

Function

The primary function of the Palmar Ulnocarpal Ligament is to stabilize the wrist joint. It restricts excessive extension and radial deviation of the wrist, thus preventing injury. It also plays a role in proprioception, providing the brain with information about the position of the wrist.

Clinical Significance

Damage to the Palmar Ulnocarpal Ligament can lead to instability of the wrist and pain. This can occur due to trauma, overuse, or degenerative diseases such as rheumatoid arthritis. Diagnosis is typically made through physical examination and imaging studies such as MRI.

Treatment

Treatment for injuries to the Palmar Ulnocarpal Ligament depends on the severity of the injury. Conservative treatment options include rest, immobilization, and physical therapy. In severe cases, surgical intervention may be necessary to repair or reconstruct the ligament.

See Also

• Wrist
• Ligament
• Ulna
• Carpal bones