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Medical Term:

anular ligament of radius


Definition: the ligament that encircles and holds the head of the radius in the radial notch of the ulna, forming the proximal radioulnar joint and enabling pronation and supination of forearm; receives the radial collateral ligament of the elbow.

Synonym(s): ligamentum anulare radiiTA, ligamentum orbiculare radii, orbicular ligament of radius