Radial styloid process | |
---|---|
![]() Human arm bones diagram | |
Details | |
Identifiers | |
Latin | processus styloideus radii |
TA98 | A02.4.05.015 |
TA2 | 1225 |
FMA | 23524 |
Anatomical terms of bone |
The radial styloid process is a projection of bone on the lateral surface of the distal radius bone.
The radial styloid process is found on the lateral surface of the distal radius bone. [1] It extends obliquely downward into a strong, conical projection. The tendon of the brachioradialis attaches at its base. [2] The radial collateral ligament of the wrist attaches at its apex. The lateral surface is marked by a flat groove for the tendons of the abductor pollicis longus and extensor pollicis brevis.
Breakage of the radius at the radial styloid is known as a Chauffeur's fracture; it is typically caused by compression of the scaphoid bone of the hand against the styloid.
De Quervain syndrome causes pain over the styloid process of the radius. [3] [4] This is due to the passage of the inflamed extensor pollicis brevis tendon and abductor pollicis longus tendon around it. [4] [5]
The styloid process of the radius is a useful landmark during arthroscopic resection of the scaphoid bone. [6]
A prominent styloid process of the radius makes applying a wrist splint more difficult. [7]
This article incorporates text in the public domain from page 220 of the 20th edition of Gray's Anatomy (1918)