Ulnar notch

Ulnar notch of the radius
Bones of left forearm. Anterior aspect. (Ulnar notch visible but not labeled.)
Details
Identifiers
Latin	incisura ulnaris radii
Dorlands /Elsevier	12447593
TA	A02.4.05.019
FMA	75082
Anatomical terminology []

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.

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