Radius (bone)

Radius
The radius (shown in red) is a bone in the forearm.
Details
Identifiers
Latin	radius
MeSH	D011884
TA98	A02.4.05.001
TA2	1210
FMA	23463
Anatomical terms of bone [edit on Wikidata]

The radius or radial bone (pl.: radii or radiuses) is one of the two large bones of the forearm, the other being the ulna. It extends from the lateral side of the elbow to the thumb side of the wrist and runs parallel to the ulna. The ulna is longer than the radius, but the radius is thicker. The radius is a long bone, prism-shaped and slightly curved longitudinally.

The radius is part of two joints: the elbow and the wrist. At the elbow, it joins with the capitulum of the humerus, and in a separate region, with the ulna at the radial notch. At the wrist, the radius forms a joint with the ulna bone.

The corresponding bone in the lower leg is the tibia.