頭狀骨

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頭狀骨
Capitate bone (left hand) 01 palmar view.png
左手掌面觀,紅色部分為頭狀骨。
Gray227 retouched.png
左手頭狀骨
:尺骨連接面(小指側)
:橈骨側(大拇指側)
细节
拉丁文 Os capitatum; os magnum
识别标示
Gray's p.226
MeSH A02.835.232.087.319.150.150
Dorlands o_07/12598140
TA英语Terminologia Anatomica A02.4.08.011
FMA FMA:23727
解剖學名詞英语Anatomical terminology

頭狀骨capitate bone)是人類掌骨中最大的一塊,為腕骨中央的骨頭。較圓的一端位於手舟骨月骨所組成的凹槽上[1]

許多哺乳類動物身上也可以找到這塊骨頭,與爬蟲類兩棲類身上的第三遠端腕骨為同源構造。

構造[编辑]

頭狀骨是腕骨中最大的一塊[2],位於腕骨遠端列。頭狀骨的旁邊接的是無名指掌骨,,尺骨側連接的是鉤骨,橈側連接三角骨,腕側結月骨跟手舟骨。[3]:708–709

表面[编辑]

The superior surface is round, smooth, and articulates with the lunate bone.[1]

The inferior surface is divided by two ridges into three facets, for articulation with the second, third, and fourth metacarpal bones, that for the third being the largest.[1]

The dorsal surface is broad and rough.[1]

The palmar surface is narrow, rounded, and rough, for the attachment of ligaments and a part of the adductor pollicis muscle.[1]

The lateral surface articulates with the lesser multangular by a small facet at its anterior inferior angle, behind which is a rough depression for the attachment of an interosseous ligament. Above this is a deep, rough groove, forming part of the neck, and serving for the attachment of ligaments; it is bounded superiorly by a smooth, convex surface, for articulation with the scaphoid bone.[1]

The medial surface articulates with the hamate bone by a smooth, concave, oblong facet, which occupies its posterior and superior parts; it is rough in front, for the attachment of an interosseous ligament.[1]

變形[编辑]

The capitate bone variably articulates with the metacarpal of the index finger.[2]

骨化[编辑]

頭狀骨的骨化始於1至5個月大時。[4]

功能[编辑]

為構成腕骨的一部分。[3]:708

歷史[编辑]

辭源來自於拉丁文的「頭」(拉丁語capitātus)。[5]

附加圖像[编辑]

參見[编辑]

本條目使用了部分解剖術語,概述請參閱這裡英语anatomical terminology

參見[编辑]

本條目包含來自屬於公共領域版本的《格雷氏解剖學》之內容,而其中有些資訊可能已經過時。

  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Gray's Anatomy (1918). See infobox.
  2. ^ 2.0 2.1 Eathorne, SW. The wrist: clinical anatomy and physical examination--an update.. Primary care. Mar 2005, 32 (1): 17–33. PMID 15831311. doi:10.1016/j.pop.2004.11.009. 
  3. ^ 3.0 3.1 Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul. Gray's anatomy for students. Philadelphia: Elsevier/Churchill Livingstone. 2005. ISBN 978-0-8089-2306-0. 
  4. ^ Balachandran, Ajay; Kartha, Moumitha; Krishna, Anooj; Thomas, Jerry; K, Prathilash; TN, Prem; GK, Libu; B, Krishnan; John, Liza. A Study of Ossification of Capitate, Hamate, Triquetral & Lunate in Forensic Age Estimation. Indian Journal of Forensic Medicine & Toxicology. 2014, 8 (2): 218–224 [18 August 2014]. ISSN 0973-9130. doi:10.5958/0973-9130.2014.00720.8. 
  5. ^ Harper, Douglas. Capitate. Online Etymology Dictionary. [5 January 2014].