To use all functions of this page, please activate cookies in your browser.
With an accout for my.bionity.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
The joint between the scaphoid, lunate, and triangular on the one hand, and the second row of carpal bones on the other, is named the midcarpal joint, and is made up of three distinct portions: in the center the head of the capitate and the superior surface of the hamate articulate with the deep cup-shaped cavity formed by the scaphoid and lunate, and constitute a sort of ball-and-socket joint.
Additional recommended knowledge
On the radial side the greater and lesser multangulars articulate with the scaphoid, and on the ulnar side the hamate articulates with the triangular, forming gliding joints.
The ligaments are: volar, dorsal, ulnar and radial collateral.
The chief movements permitted in the mid-carpal joint are flexion and extension and a slight amount of rotation.
In flexion and extension, which are the movements most freely enjoyed, the greater and lesser multangulars on the radial side and the hamate on the ulnar side glide forward and backward on the navicular and triangular respectively, while the head of the capitate and the superior surface of the hamate rotate in the cup-shaped cavity of the navicular and lunate.
Flexion at this joint is freer than extension.
A very trifling amount of rotation is also permitted, the head of the capitate rotating around a vertical axis drawn through its own center, while at the same time a slight gliding movement takes place in the lateral and medial portions of the joint.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Midcarpal_joint". A list of authors is available in Wikipedia.|