Ulnar styloid process

Bone: Ulnar styloid process
Bones of left forearm. Anterior aspect. (Styloid process of ulna labeled at bottom left.)
Human arm bones diagram
Latin	processus styloideus ulnae
Gray's	subject #52 218

The styloid process of the ulna projects from the medial and back part of the bone; it descends a little lower than the head, and its rounded end affords attachment to the ulnar collateral ligament of the wrist-joint.

The head is separated from the styloid process by a depression for the attachment of the apex of the triangular articular disk, and behind, by a shallow groove for the tendon of the Extensor carpi ulnaris.

The styloid process is easily seen and palpated on the medial side of the posterior of the wrist.

External links

• lesson4bonesofantforearm at The Anatomy Lesson by Wesley Norman (Georgetown University)

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.