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Isolated fractures of the trapezoid are rare, representing 0.4% of the total, thus being the least common of all carpal fractures. This is due to the bone being in a fairly protected position. Distally, it forms a stable, relatively immobile joint with the second metacarpal, radially and proximally
1184:
449:
52:
334:
However, injury can occur through axial force applied to the second metacarpal base. Subluxations, such as ones caused by delivering a blow, are not uncommon. Direct trauma to the bone can also cause fracture.
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632:
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437:
425:
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Due to its rarity, standard treatment has not been established. A wide range of treatments are possible, including rest, surgery and casting.
549:
129:
209:, the narrow end the palmar surface; and by its having four articular facets touching each other, and separated by sharp edges. It is
870:
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264:; it is convex from side to side, concave from before backward and subdivided by an elevated ridge into two unequal facets.
902:
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Drake, Richard L.; Vogl, Wayne; Tibbitts, Adam W.M. Mitchell; illustrations by
Richard; Richardson, Paul (2005).
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39:
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856:
455:
Transverse section across the wrist (palm on top, thumb on left). Trapezoid bone shown in yellow (labelled as "
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it forms strong ligaments with the trapezium and the capitate ulnarly, scaphoid respectively.
77:
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829:
819:
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1185:
Knowledge (XXG) articles incorporating text from the 20th edition of Gray's
Anatomy (1918)
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of carpal bones that give structure to the palm of the hand. It may be known by its
1119:
1021:
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are rough for the attachment of ligaments, the former being the larger of the two.
186:
17:
117:
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1034:
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222:
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Cross section of wrist (thumb on left). Trapezoid shown in red (labelled as "
318:
The carpal bones function as a unit to provide a bony superstructure for the
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978:
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307:
303:
244:
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87:
72:
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166:
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243:, quadrilateral, smooth, and slightly concave, articulates with the
610:
51:
44:
Left hand anterior view (palmar view). Trapezoid bone shown in red.
100:
229:. The trapezoid is found within the distal row of carpal bones.
1012:
965:
641:
383:
Position of trapezoid bone (shown in red). Left hand. Animation.
319:
226:
614:
645:
213:
with the "second distal carpal" of reptiles and amphibians.
302:
is concave and smooth in front, for articulation with the
205:-shaped form, the broad end of the wedge constituting the
419:
Right hand posterior view (dorsal view). Thumb on bottom.
306:; rough behind, for the attachment of an interosseous
1152:
443:
Trapezoid shown in yellow. Left hand. Palmar surface.
431:
Trapezoid shown in yellow. Left hand. Dorsal surface.
395:
Trapezoid bone of the left hand. Close up. Animation.
1118:
1080:
1020:
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358:"foot" or "edge." Literally, "a little table" from
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123:
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61:
32:
567:"Rare isolated trapezoid fracture: a case report"
544:. Philadelphia: Elsevier/Churchill Livingstone.
626:
8:
350:which means "irregular quadrilateral," from
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289:, convex and smooth, articulates with the
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38:
590:
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373:
510:This article incorporates text in the
164:
29:
346:The etymology derives from the Greek
106:os trapezoideum, os multangulum minus
7:
565:Sadowski, RM; Montilla, RD (2008).
25:
197:. It is the smallest bone in the
1162:
504:
464:
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436:
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412:
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221:The trapezoid is a four-sided
1:
70:Articulates with four bones:
542:Gray's anatomy for students
518:of the 20th edition of
1221:
484:
583:10.1007/s11552-008-9100-8
159:
49:
37:
161:Anatomical terms of bone
56:The left trapezoid bone.
183:lesser multangular bone
487:anatomical terminology
262:second metacarpal bone
326:Clinical Significance
256:articulates with the
881:supracondylar ridges
362:meaning "table" and
27:Carpal (wrist) bone
846:deltoid tuberosity
485:This article uses
18:Lesser multangular
1200:Bones of the hand
1150:
1149:
1146:
1145:
1007:
1006:
955:Lister's tubercle
681:subclavian groove
676:costal tuberosity
551:978-0-8089-2306-0
370:Additional images
225:found within the
175:
174:
170:
78:second metacarpal
16:(Redirected from
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1167:
1166:
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1082:Metacarpal bones
1018:
983:coronoid process
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830:bicipital groove
760:coracoid process
750:spine of scapula
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253:inferior surface
240:superior surface
167:edit on Wikidata
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1190:Skeletal system
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998:styloid process
991:trochlear notch
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951:styloid process
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852:lower extremity
797:upper extremity
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685:
666:conoid tubercle
654:Shoulder girdle
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407:Trapezoid bone.
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286:lateral surface
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725:great scapular
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711:infraspinatous
707:supraspinatous
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671:trapezoid line
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521:Gray's Anatomy
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473:Lesser Multang
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457:Lesser Multang
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299:medial surface
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179:trapezoid bone
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83:trapezium bone
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33:Trapezoid bone
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841:radial sulcus
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748:
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741:
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734:
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731:glenoid fossa
729:
726:
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721:suprascapular
718:
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512:public domain
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69:
67:Articulations
65:
60:
53:
48:
41:
36:
31:
19:
1205:Carpal bones
1133:intermediate
1054:
1022:Carpal bones
996:near wrist (
987:radial notch
973:near elbow (
945:near wrist (
934:near elbow (
894:
880:
866:
850:
834:
815:
801:
795:
764:
744:supraglenoid
740:infraglenoid
735:
716:
698:
577:(4): 372–4.
574:
570:
560:
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220:
193:, including
182:
178:
176:
130:A02.4.08.010
105:
947:ulnar notch
867:epicondyles
703:subscapular
494:Carpal bone
354:"four" and
260:end of the
223:carpal bone
187:carpal bone
95:Identifiers
1179:Categories
1040:triquetral
975:tuberosity
940:tuberosity
806:anatomical
571:Hand (N Y)
500:References
366:"shaped."
211:homologous
199:distal row
75:proximally
1120:Phalanges
1055:trapezoid
1050:trapezium
979:olecranon
907:olecranon
857:capitulum
816:tubercles
736:tubercles
348:trapezion
291:trapezium
217:Structure
191:tetrapods
85:laterally
1128:proximal
1060:capitate
1045:pisiform
1030:scaphoid
903:coronoid
862:trochlea
810:surgical
773:inferior
769:superior
755:acromion
658:clavicle
601:18780025
516:page 225
481:See also
314:Function
308:ligament
304:capitate
278:surfaces
258:proximal
245:scaphoid
233:Surfaces
90:medially
88:capitate
80:distally
73:scaphoid
1169:Anatomy
1070:hamulus
918:Forearm
885:lateral
871:lateral
820:greater
788:Humerus
777:lateral
717:notches
691:Scapula
644:of the
592:2584218
364:-oeides
360:trapeza
342:History
185:) is a
118:D051223
62:Details
1155:Portal
1138:distal
1065:hamate
1035:lunate
927:Radius
899:radial
895:fossae
889:medial
875:medial
824:lesser
765:angles
699:fossae
599:
589:
548:
524:(1918)
276:palmar
270:dorsal
207:dorsal
195:humans
1195:Wrist
802:necks
642:Bones
514:from
203:wedge
165:[
154:23724
101:Latin
1013:Hand
966:Ulna
936:head
836:body
597:PMID
546:ISBN
356:peza
352:tra-
320:hand
296:The
283:The
273:and
267:The
250:The
237:The
227:hand
177:The
142:1257
125:TA98
113:MeSH
1110:5th
1105:4th
1100:3rd
1095:2nd
1090:1st
646:arm
587:PMC
579:doi
475:").
459:").
322:.
189:in
149:FMA
137:TA2
1181::
989:,
985:,
981:,
977:,
953:,
949:,
938:,
905:,
901:,
887:,
873:,
822:,
808:,
775:,
771:,
742:,
723:,
709:,
705:,
656:,
595:.
585:.
573:.
569:.
532:^
310:.
293:.
247:.
1157::
1000:)
993:)
957:)
942:)
909:)
897:(
891:)
883:(
877:)
869:(
854::
838::
826:)
818:(
812:)
804:(
799::
779:)
767:(
746:)
738:(
727:)
719:(
713:)
701:(
634:e
627:t
620:v
603:.
581::
575:3
554:.
489:.
181:(
169:]
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
