Third metacarpal bone

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Third metacarpal bone
File:Third metacarpal bone (left hand) 01 palmar view.png
Third metacarpal of the left hand (shown in red). Palmar view.
File:Gray231.png
The left third metacarpal.
Details
Latin Os metacarpale III
Identifiers
MeSH A02.835.232.087.319.550
TA Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value).
TH {{#property:P1694}}
TE {{#property:P1693}}
FMA 23901
Anatomical terms of bone
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]

The third metacarpal bone (metacarpal bone of the middle finger) is a little smaller than the second.

The dorsal aspect of its base presents on its radial side a pyramidal eminence, the styloid process, which extends upward behind the capitate; immediately distal to this is a rough surface for the attachment of the extensor carpi radialis brevis muscle.

The carpal articular facet is concave behind, flat in front, and articulates with the capitate.

On the radial side is a smooth, concave facet for articulation with the second metacarpal, and on the ulnar side two small oval facets for the fourth metacarpal.

Ossification

The ossification process begins in the shaft during prenatal life, and in the head between 11th and 27th months.[1]

Additional images

See also

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

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