Third metacarpal bone: Difference between revisions

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{{Infobox Bone

|Name = Third metacarpal bone

|Latin = Osos metacarpale 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.

|Image2 = Metacarpals numbered-en.svg

|Caption2 = The five [[metacarpus|metacarpal bones]], numbered.

|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 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.

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==

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==References==

{{Gray's}}

{{reflist}}

{{Commons category|Third metacarpal bone}}

{{Bones of upper extremity}}

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[[Category:Bones of the hand]]

[[Category:Metacarpus]]

{{musculoskeletal-stub}}

{{Portal bar|Anatomy}}