Dorsal radioulnar ligament

Dorsal Radioulnar Ligament

The Dorsal Radioulnar Ligament is a fibrous band in the human body that plays a crucial role in the stability of the forearm. It is one of the two main ligaments that connect the radius and ulna, the two long bones of the forearm. The other ligament is the Palmar Radioulnar Ligament.

File:Dorsal radioulnar ligament.png

Dorsal Radioulnar Ligament (Image courtesy of Wikimedia Commons)

Anatomy

The Dorsal Radioulnar Ligament is located on the dorsal (back) side of the wrist. It originates from the dorsal rim of the ulnar notch of the radius and inserts into the dorsal surface of the head of the ulna. This ligament is taut when the wrist is in pronation, and lax when the wrist is in supination.

Function

The primary function of the Dorsal Radioulnar Ligament is to provide stability to the forearm and prevent excessive movement between the radius and ulna. It also plays a role in the rotation of the forearm, allowing for pronation and supination.

Clinical Significance

Injury to the Dorsal Radioulnar Ligament can result in instability of the forearm, pain, and limited range of motion. Treatment may include physical therapy, immobilization, or in severe cases, surgery.

See Also

• Radius (bone)
• Ulna
• Forearm
• Ligament