distal radioulnar joint

The distal radioulnar joint is a pivot type synovial joint between the distal radius and ulna.

Summary

Gross anatomy

Articulation

The distal radioulnar joint is a pivot type synovial joint existing between the ulnar notch of the distal radius and the head of the ulna. The primary uniting structure of the joint is the articular disc of the distal radioulnar joint, also termed the triangular ligament  (part of the Triangular fibrocartilage complex (TFCC)).

Movement

The primary movement of the distal radioulnar joint is to allow pronation and supination of the forearm.

Ligaments and tendons

The distal radioulnar joint has intrinsic and extrinsic stabilizing structures.

Intrinsic

  • anterior and posterior distal radioulnar ligaments
  • distal radioulnar joint capsule

Extrinsic

Arterial supply

The blood supply to the distal radio-ulnar joint is provided by the:

Innervation

The nervous supply to the distal radioulnar joint is provided by the:

Related pathology