Third metacarpal bone: Difference between revisions

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{{Infobox Bone |

|Name = Third metacarpal = {{PAGENAME}} |bone

|Latin = ossaos metacarpaliametacarpale III |

|Image = Third metacarpal bone (left hand) 01 palmar view.png

GraySubject = 55 |

|Caption = Third metacarpal of the left hand (shown in red). Palmar view.

GrayPage = 228 |

Image |Image2 = Gray231.png |

Caption |Caption2 = The left third metacarpal. (Left.) |

Image2 |Origins = Gray220.png |

|Insertions = |

Caption2 = Bones of the left hand. Dorsal surface.|

|Articulations = |

Origins = |

Insertions = |

Articulations = |

MeshName = Metacarpal+Bones |

MeshNumber = A02.835.232.087.319.550 |

}}

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

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 dorsal aspect of its base presents on its radial side a pyramidal eminence, the [[Third metacarpal styloid process|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.

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 the 11th and 27th months.<ref name=Ajay>{{cite journal|last=Balachandran|first=Ajay|author2=Anooj Krishna|author3= Moumitha Kartha|author4= Libu G. K.|author5= Liza John|author6= Krishnan B|title=A Study of Ossification of heads of 2nd to 5th Metacarpals in Forensic Age Estimation in the Kerala Population|journal=Journal of Evolution of Medical and Dental Sciences|date=30 December 2013|volume=2|issue=52|pages=10165–10171|doi=10.14260/jemds/1751|url=http://www.jemds.com/data_pdf/dr%20ajay%20balachandran.pdf|access-date=26 December 2013|doi-access=free}}</ref>

== Additional images ==

<gallery>

File:Third metacarpal bone (left hand) - animation01.gif|Third metacarpal bone of the left hand (shown in red). Animation.

File:Third metacarpal bone (left hand) - animation02.gif|Third metacarpal bone of the left hand. Close up.

File:Gray219 - Third metacarpal bone.png|Palmer view of the left hand (third metacarpal shown in yellow).

File:Gray220 - Third metacarpal bone.png|Dorsal view of the left hand (third metacarpal shown in yellow).

</gallery>

==See also==

* [[metacarpusMetacarpus]]

* [[First metacarpal bone]]

* [[Second metacarpal bone]]

* [[Fourth metacarpal bone]]

* [[Fifth metacarpal bone]]

==References==

{{Gray's}}

{{reflist}}

{{Commons category|Third metacarpal bone}}

{{Bones of upper extremity}}

[[Category:Skeletal system]]

[[Category:Bones of the hand]]

[[sv:Tredje metakarpalbenet]]

[[Category:Metacarpus]]

{{musculoskeletal-stub}}

{{Portal bar|Anatomy}}