Head of the radius

Definition

The head of the radius is the round, disc-shaped part at the top end of the radius bone, which is one of the two bones in the forearm. It articulates with the capitulum of the humerus and the radial notch of the ulna, enabling rotation and bending movements at the elbow.

Related terms

Radius: The radius is one of two long bones in the forearm, running parallel to the ulna and contributing to wrist and elbow joints.

Capitulum of Humerus: A rounded knob-like structure on the lateral side of the humerus that articulates with the head of the radius to enable elbow movement.

Radial Notch: A depression on the ulna bone that accommodates and articulates with the head of the radius, allowing for pronation and supination (rotational) movements of the forearm