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 | |
|---|---|
 Bones of left forearm. Anterior aspect. (Ulnar notch visible but not labeled.) | |
| Details | |
| Identifiers | |
| Latin | incisura ulnaris radii |
| TA98 | A02.4.05.019 |
| TA2 | 1228 |
| FMA | 75082 23530, 75082 |
| Anatomical terminology | |
References
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This article incorporates text in the public domain from page 220 of the 20th edition of Gray's Anatomy (1918)
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