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Fifth metacarpal bone
The fifth metacarpal bone (metacarpal bone of the little finger) presents on its base one facet on its superior surface, which is concavo-convex and articulates with the hamate, and one on its radial side, which articulates with the fourth metacarpal.
Additional recommended knowledge
On its ulnar side is a prominent tubercle for the insertion of the tendon of the extensor carpi ulnaris muscle.
The dorsal surface of the body is divided by an oblique ridge, which extends from near the ulnar side of the base to the radial side of the head.
The lateral part of this surface serves for the attachment of the fourth Interosseus dorsalis; the medial part is smooth, triangular, and covered by the Extensor tendons of the little finger.
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 As such, some of the information contained herein may be outdated.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 "Fifth_metacarpal_bone". A list of authors is available in Wikipedia.|