Proximal radioulnar joint

Definition

The proximal radioulnar joint is a pivot type of synovial joint located between the radius and ulna bones near the elbow, allowing for the rotation of the forearm. It plays a crucial role in enabling movements such as turning the palm up or down.

Related terms

Synovial Joint: A type of joint that is enclosed within a fluid-filled capsule, allowing for smooth movement between bones.

Radius: One of the two major bones in the forearm, positioned on the thumb side, that rotates around the ulna to perform motions like pronation and supination.

Ulna: The longer of the two bones in the forearm, situated on the side opposite to the thumb, it forms a hinge joint with the humerus at the elbow and pivots with the radius at both ends (proximal and distal)