WordNet

remove the bones from; "bone the turkey before roasting it" (同)debone
the porous calcified substance from which bones are made (同)osseous_tissue
consisting of or made up of bone; "a bony substance"; "the bony framework of the body"
a shade of white the color of bleached bones (同)ivory, pearl, off-white
rigid connective tissue that makes up the skeleton of vertebrates (同)os
having bones as specified; "his lanky long-boned body"
having had the bones removed; "a boneless rib roast"; "a boned (or deboned) fish" (同)deboned
a quadrilateral with two parallel sides
the wrist bone between the trapezium and the capitate bones (同)trapezoid_bone, os trapezoideum
a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance (同)castanets, clappers, finger cymbals

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〈C〉骨 / 〈U〉骨を作っている物質,骨質 / 《複数形で》骨格;死骸(がい) / 〈魚など〉‘の'骨を取る
(魚など)骨を取り除いた / (衣服が)(コルセットなどで)骨で張りをつけた[ような]
《米》台形 / 《英》不等辺四辺形

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/02/04 11:16:31」(JST)

wiki en

The trapezoid bone (lesser multangular bone) is a carpal bone in tetrapods, including humans. It is the smallest bone in the distal row. It may be known by its wedge-shaped form, the broad end of the wedge constituting the dorsal, the narrow end the palmar surface; and by its having four articular facets touching each other, and separated by sharp edges. It is homologous with the "second distal carpal" of reptiles and amphibians.

Structure

The trapezoid is a four-sided carpal bone found within the hand. The trapezoid is found within the distal row of carpal bones.^[1] ^:708

Surfaces

The superior surface, quadrilateral, smooth, and slightly concave, articulates with the scaphoid.

The inferior surface articulates with the proximal end of the second metacarpal bone; it is convex from side to side, concave from before backward and subdivided by an elevated ridge into two unequal facets.

The dorsal and palmar surfaces are rough for the attachment of ligaments, the former being the larger of the two.

The lateral surface, convex and smooth, articulates with the trapezium.

The medial surface is concave and smooth in front, for articulation with the capitate; rough behind, for the attachment of an interosseous ligament.

Function

The carpal bones function as a unit to provide a bony superstructure for the hand.^[1] ^:708

History

The etymology derives from the Greek trapezion which means "irregular quadrilateral," from tra- "four" and peza "foot" or "edge." Literally, "a little table" from trapeza meaning "table" and -oeides "shaped."

Additional images

Position of trapezoid bone (shown in red). Left hand. Animation.
Trapezoid bone of the left hand. Close up. Animation.
Trapezoid bone.
Right hand posterior view (dorsal view). Thumb on bottom.
Trapezoid shown in yellow. Left hand. Dorsal surface.
Trapezoid shown in yellow. Left hand. Palmar surface.
Transverse section across the wrist (palm on top, thumb on left). Trapezoid bone shown in yellow (labelled as "Lesser Multang").
Cross section of wrist (thumb on left). Trapezoid shown in red (labelled as "Lesser Multang").

References

This article incorporates text from a public domain edition of Gray's Anatomy.

^ ^a ^b Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students. Philadelphia: Elsevier/Churchill Livingstone. ISBN 978-0-8089-2306-0.

UpToDate Contents

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English Journal

Continuing asymptomatic scaphoid bone loss in scaphoid-trapezium-trapezoid joint pyrocarbon implants.

Hay-David AG, Sivaji CK, Packer GJ.SourceDepartment of Trauma & Orthopaedics, Southend University Hospital, UK. Electronic address: agchaydavid@doctors.org.uk.
Journal of plastic, reconstructive & aesthetic surgery : JPRAS.J Plast Reconstr Aesthet Surg.2013 Nov 20. pii: S1748-6815(13)00633-5. doi: 10.1016/j.bjps.2013.11.003. [Epub ahead of print]
PMID 24295563

Clavicle and coracoid process drilling technique for truly anatomic coracoclavicular ligament reconstruction.

Xue C, Zhang M, Zheng TS, Zhang GY, Fu P, Fang JH, Li X.SourceDepartment of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu Province 210029, People's Republic of China.
Injury.Injury.2013 Oct;44(10):1314-20. doi: 10.1016/j.injury.2013.06.022. Epub 2013 Jul 19.
BACKGROUND: High-grade acromioclavicular (AC) joint separations require surgical treatment, as conservative treatment may result in functional decline or persistent pain. Although many surgical techniques have been described in the literature, there is still no non-controversial gold standard proced
PMID 23876623

In vivo 3-dimensional analysis of dorsal intercalated segment instability deformity secondary to scapholunate dissociation: a preliminary report.

Omori S, Moritomo H, Omokawa S, Murase T, Sugamoto K, Yoshikawa H.SourceDepartment of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
The Journal of hand surgery.J Hand Surg Am.2013 Jul;38(7):1346-55. doi: 10.1016/j.jhsa.2013.04.004.
PURPOSE: To investigate in vivo 3-dimensional patterns of dorsal intercalated segment instability deformity resulting from scapholunate dissociation.METHODS: We studied 6 patients with stage IV scapholunate dissociation in which there were complete tears of the scapholunate interosseous ligament and
PMID 23790423

Japanese Journal

肩鎖関節完全脱臼に対するCadenat変法の治療成績

伊崎輝昌,三宅智,熊野貴史,藤澤基之,寺谷威,内藤正俊,柴田陽三,櫻井真,篠田毅
肩関節 37(2), 501-503, 2013
… Recently, an anatomical reconstruction of both the conoid and the trapezoid coracoclavicular ligament using of free tendon grafts has been described. … However, the fractures associated with the clavicular bone tunnels were reported. …
NAID 130003384326

鎖骨遠位端骨折の術式－烏口鎖骨靭帯機能に注目して－

酒本佳洋,田中康仁,森本光俊,橋内智尚,桜井悟良,二階堂亮平,水掫貴満,仲川喜之,井上和也
肩関節 36(3), 889-892, 2012
… We ran two anchor sutures around the clavicle through the conoid and trapezoid ligaments. … It showed upward displacement of the proximate bone in 2 cases and prolonged union in 2 cases. … In case of a more unstable fracture, it is important to reconstruct not only the bone fracture, but also the function of coracoclaviclar ligament. …
NAID 130002103556

小菱形骨無腐性壊死の1例

太田壮一,杉本正幸,嶋靖子,武井大輔,長嶋秀明,長谷川泰隆
中部日本整形外科災害外科学会雑誌 53(2), 421-422, 2010-03-01
NAID 10026236578

Related Pictures

★リンクテーブル★

リンク元	「小菱形骨」
関連記事	「bone」

「小菱形骨」

Trapezoid bone
	Left hand anterior view (palmar view). Trapezoid bone shown in red.
	The left trapezoid bone.
Details
Latin	os trapezoideum, os multangulum minus
Articulations	articulates with four bones:; scaphoid proximally; second metacarpal distally; trapezium bone laterally; capitate medially
Identifiers
Gray's	p.225
MeSH	A02.835.232.087.319.150.805
Dorlands; /Elsevier	o_07/12598807
TA	A02.4.08.010
FMA	23724
	Anatomical terms of bone

　　[★]

英: trapezoid ()

同: trapezoid

英: trapezoid bone

同: trapezoid

「bone」

　　[★] 骨　　　　　　

[GRAYS2005-1] Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by Richard; Richardson, Paul (2005). Gray's anatomy for students. Philadelphia: Elsevier/Churchill Livingstone. ISBN 978-0-8089-2306-0.

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trapezoid bone