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Second metacarpal bone
The second metacarpal bone (metacarpal bone of the index finger) is the longest, and its base the largest, after the first metacarpal. Additional recommended knowledgeIts base is prolonged upward and medialward, forming a prominent ridge. It presents four articular facets: three on the upper surface and one on the ulnar side. Of the facets on the upper surface:
The facet on the ulnar side articulates with the third metacarpal. The extensor carpi radialis longus muscle is inserted on the dorsal surface and the flexor carpi radialis muscle on the volar surface of the base. See alsoThis 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 As such, some of the information contained herein may be outdated.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.
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Second_metacarpal_bone". A list of authors is available in Wikipedia. |