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The articular surface for the ulna is called the ulnar notch (sigmoid cavity) of the radius; it is in the distal radius, and is narrow, concave, smooth, and articulates with the head of the ulna forming the distal radioulnar joint.

Ulnar notch of the radius
Gray213.png
Bones of left forearm. Anterior aspect. (Ulnar notch visible but not labeled.)
Details
Identifiers
Latinincisura ulnaris radii
TAA02.4.05.019
FMA75082
Anatomical terminology

ReferencesEdit

This article incorporates text in the public domain from page 220 of the 20th edition of Gray's Anatomy (1918)