Palmar radioulnar ligament

Palmar Radioulnar Ligament

The Palmar Radioulnar Ligament is a fibrous band in the human body that connects the radius and ulna bones in the forearm. It is one of the key ligaments that help stabilize the radioulnar joint and allow for the rotation of the forearm.

The Palmar Radioulnar Ligament (highlighted) in relation to the radius and ulna bones.

Anatomy

The Palmar Radioulnar Ligament is located on the palmar (anterior) side of the distal radioulnar joint. It originates from the anterior margin of the ulnar notch of the radius and inserts into the anterior surface of the head of the ulna.

Function

The primary function of the Palmar Radioulnar Ligament is to provide stability to the distal radioulnar joint. It restricts excessive movement and helps to prevent dislocation. Additionally, it allows for the rotation of the forearm, enabling pronation and supination movements.

Clinical Significance

Injury to the Palmar Radioulnar Ligament can result in instability of the distal radioulnar joint, leading to pain, limited range of motion, and potential long-term complications such as osteoarthritis. Treatment typically involves rest, physical therapy, and in severe cases, surgical intervention.

See Also

• Distal radioulnar articulation
• Dorsal radioulnar ligament
• Interosseous membrane of the forearm