The proximal radioulnar articulation, also known as the proximal radioulnar joint (PRUJ), is a synovial pivot joint between the circumference of the head of the radius and the ring formed by the radial notch of the ulna and the annular ligament.

[1] It occurs between the circumference of the head of the radius and the ring formed by the radial notch of the ulna and the annular ligament.

[2] The interosseous membrane of the forearm and the annular ligament stabilise the joint.

[2] A number of nerves run close to the proximal radioulnar joint, including: This article incorporates text in the public domain from page 324 of the 20th edition of Gray's Anatomy (1918)

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