Radial notch

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

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.

Annular ligament of radius, from above.

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