Proximal radioulnar articulation

Proximal radioulnar articulation
Capsule of elbow-joint (distended). Anterior aspect.
Annular ligament of radius, from above. The head of the radius has been sawn off and the bone dislodged from the ligament.
Details
Identifiers
Latin	articulatio radioulnaris proximalis
TA98	A03.5.09.004
TA2	1775
FMA	38860
Anatomical terminology [edit on Wikidata]

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.

Structure

The proximal radioulnar joint is a synovial pivot joint. 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.^[1] The interosseous membrane of the forearm and the annular ligament stabilise the joint.^[1]

A number of nerves run close to the proximal radioulnar joint, including:

median nerve
musculocutaneous nerve
radial nerve

References

This article incorporates text in the public domain from page 324 of the 20th edition of Gray's Anatomy (1918)

^ ^a ^b Weiss, Arnold-Peter C.; Hastings, Hill (1992-07-01). "The anatomy of the proximal radioulnar joint". Journal of Shoulder and Elbow Surgery. 1 (4): 193–199. doi:10.1016/1058-2746(92)90013-S. ISSN 1058-2746. PMID 22971623.

Joints and ligaments of the arm

Shoulder

Sternoclavicular	Anterior sternoclavicular Posterior sternoclavicular Interclavicular Costoclavicular
Acromioclavicular	Syndesmoses: Coracoacromial Superior transverse scapular Inferior transverse of scapula Synovial: Acromioclavicular Coracoclavicular (trapezoid conoid)
Glenohumeral	Capsule Coracohumeral Glenohumeral (superior, middle, and inferior) Transverse humeral Glenoid labrum

Elbow

Humeroradial	Radial collateral
Humeroulnar	Ulnar collateral
Proximal radioulnar	Anular Oblique cord Quadrate

Forearm

Distal radioulnar	Palmar radioulnar Dorsal radioulnar Interosseous membrane of forearm

Hand

Wrist/radiocarpal	Dorsal radiocarpal/Palmar radiocarpal Dorsal ulnocarpal/Palmar ulnocarpal Ulnar collateral/Radial collateral
Intercarpal Midcarpal	Radiate carpal Dorsal intercarpal Palmar intercarpal Interosseous intercarpal Scapholunate Pisiform joint (Pisohamate Pisometacarpal)
Carpometacarpal	Dorsal carpometacarpal Palmar carpometacarpal thumb: Radial collateral Ulnar collateral
Intermetacarpal	Deep transverse metacarpal Superficial transverse metacarpal
Metacarpophalangeal	Collateral Palmar
Interphalangeal	Collateral Palmar
Other	Carpal tunnel Ulnar canal