For faster navigation, this Iframe is preloading the Wikiwand page for Carpus and tarsus of land vertebrates.

Carpus and tarsus of land vertebrates

Carpals and tarsals

The carpus (wrist) and tarsus (ankle) of land vertebrates primitively had three rows of carpal or tarsal bones. Often some of these have become lost or fused in evolution.

Accessory bones amidst tarsals

  • Three proximals. In the hand humans have all three. In the foot the middle proximal appears in 5-15% of people as an os trigonum and can be involved in foot pain.[1]
  • Centrale or os centrale, on the medial side. In humans and our closest relatives the African apes (chimpanzees and gorillas) it fuses to the scaphoid where it forms the articulation with the trapezoid bone; occasionally it stays separate. In Man's foot it is the navicular. Some early land vertebrates had more than one (up to three) os centrale per hand or foot (plural "(ossa) centralia").

Figure to the right shows locations of rare accessory bones of the foot (presence variable from person to person): 1=Os cuneometatarsal I plantare, 2=os uncinatum, 3=os sesamoideum tibialis posterior, 4=os sesamoideum peroneum, 5=os cuboideum secundarium, 6=os trochleare calcanei, 7=os in sinus tarsi, 8=os sustentaculum tali, 9=os talocalcaneale posterius, 10=os aponeurosis plantaris, 11=os subcalcaneum, 12=os sesamoideum tibialis anterior, 13=os cuneometatarsal I tibiale, 14=os intermetatarsal I, 15=os cuneometatarsal II dorsale, 16=os paracuneiforme, 17=os cuneonaviculare, 18=os intercuneiforme, 19=os intermetatarsal IV, 20=/os talonaviculare, 21=os vesalianum pedis, 22=os tibiale externum, 23=os talotibiale dorsale, 24=os supratalare, 25=os calcaneus secundarius, 26=os subtibiale, 27=os subfibulare, 28=os retinaculi, 29=os calcaneus accessorius, 30=os trigonum, 31=os supracalcaneum, 32=os tendinis calcanei.

Comparative vertebrate anatomy

Forelimb skeleton of orang-utan, dog, swine, cattle, tapir, and horse

Abbreviations: A, Scaphoid bone; B, Lunate bone; C, Triquetrum; D, Trapezium; E, Trapezoid; F, Capitatum; G, Hamatum;

P, Pisiform; Cc, Central carpal; M, Metacarpal; (A-G, Cc, P are Carpals). 1-5, thumb and digits two to five. R, Radius; U, Ulna.

From the classic German encyclopedia Meyers Konversations-Lexikon 1888.[2][3]

Frog four limbs and human foot compared.

See also


  1. ^ Marie-Lyne Nault, Mininder S Kocher, Lyle J Micheli (Sep 2014). "Os trigonum syndrome". J Am Acad Orthop Surg. 22 (9): 545–53. doi:10.5435/JAAOS-22-09-545. PMID 25157036. S2CID 40359131.((cite journal)): CS1 maint: multiple names: authors list (link)
  2. ^ Meyers Konversion Lexikon. 1888.
  3. ^ "Wikisource. Handskelette von Säugetieren. (Hand skeletons of mammals)".

{{bottomLinkPreText}} {{bottomLinkText}}
Carpus and tarsus of land vertebrates
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!

Your input will affect cover photo selection, along with input from other users.


Get ready for Wikiwand 2.0 ๐ŸŽ‰! the new version arrives on September 1st! Don't want to wait?