The radial collateral ligament (external lateral ligament, radial carpal collateral ligament) extends from the tip of the
styloid process of the
radius
In classical geometry, a radius ( : radii) of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the latin ''radius'', meaning ray but also the ...
and attaches to the radial side of the
scaphoid (formerly
Navicular
The navicular bone is a small bone found in the feet of most mammals.
Human anatomy
The navicular bone in humans is one of the tarsal bones, found in the foot. Its name derives from the human bone's resemblance to a small boat, caused by th ...
bone of the hand), immediately adjacent to its proximal articular surface and some fibres extend to the lateral side of the
trapezium (greater multangular bone).
It is in relation with the
radial artery
In human anatomy, the radial artery is the main artery of the lateral aspect of the forearm.
Structure
The radial artery arises from the bifurcation of the brachial artery in the antecubital fossa. It runs distally on the anterior part of the f ...
, which separates the ligament from the tendons of the
Abductor pollicis longus and
Extensor pollicis brevis.
The radial collateral ligament's role is to limit
ulnar deviation at the wrist.
References
External links
*
* http://classes.kumc.edu/sah/resources/handkines/ligaments/wvsradcoll.htm
Ligaments
Ligaments of the upper limb
{{ligament-stub