Radial notch
Upper extremity of left ulna. Lateral aspect. (Radial notch visible at center top.)
Details
Identifiers
Latin	incisura radialis ulnae
TA98	A02.4.06.005
TA2	1234
FMA	23618
Anatomical terms of bone [edit on Wikidata]

The radial notch of the ulna (lesser sigmoid cavity) is a narrow, oblong, articular depression on the lateral side of the coronoid process; it receives the circumferential articular surface of the head of the radius.

It is concave from before backward, and its prominent extremities serve for the attachment of the annular ligament.

• Right ulna (anterior - proximal end)^{[dead link]} - BioWeb at University of Wisconsin System
• elbow/elbowbones/bones3 at the Dartmouth Medical School's Department of Anatomy

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