頭狀骨
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及月骨所組成的凹槽上[1]。
頭狀骨 | |
---|---|
左手掌面觀,紅色部分為頭狀骨。 | |
左手頭狀骨 左:尺骨連接面(小指側) 右:橈骨側(大拇指側) | |
细节 | |
屬於 | 腕骨 |
识别标示 | |
拉丁语 | Os capitatum; os magnum |
MeSH | D051224 |
TA98 | A02.4.08.011 |
TA2 | 1258 |
FMA | FMA:23727 |
格雷氏 | p.226 |
骨骼解剖学术语 |
構造
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
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
The capitate bone variably articulates with the metacarpal of the index finger.[2]
骨化
頭狀骨的骨化始於1至5個月大時。[4]
功能
為構成腕骨的一部分。[3]:708
附加圖像
- 左手頭狀骨示意圖(紅色部分)
- 左手頭狀骨近觀圖(紅色部分)
- 左手頭狀骨,尺骨面觀(小指面觀)
- 左手頭狀骨,橈骨面觀(大拇指面)
- Right hand posterior view (dorsal view). Thumb on bottom.
- Right hand anterior view (palmar view). Thumb on top.
- Capitate bone shown in yellow. Left hand. Palmar surface.
- Capitate bone shown in yellow. Left hand. Dorsal surface.
- Transverse section across the wrist (palm on top, thumb on left). Capitate bone shown in yellow.
- Cross section of wrist (thumb on left). Capitate shown in red.
參見
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。
- Gray's Anatomy (1918). See infobox.
- Eathorne, SW. . Primary care. Mar 2005, 32 (1): 17–33. PMID 15831311. doi:10.1016/j.pop.2004.11.009.
- Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul. . Philadelphia: Elsevier/Churchill Livingstone. 2005. ISBN 978-0-8089-2306-0.
- Balachandran, Ajay; Kartha, Moumitha; Krishna, Anooj; Thomas, Jerry; K, Prathilash; TN, Prem; GK, Libu; B, Krishnan; John, Liza. . 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. (原始内容存档于2019-12-10).
- Harper, Douglas. . Online Etymology Dictionary. [5 January 2014].