CALCANEUM
\kˌalkɐnˈiːəm], \kˌalkɐnˈiːəm], \k_ˌa_l_k_ɐ_n_ˈiː__ə_m]\
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By William R. Warner
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The heel; a large bone in the tarsus which forms the heel and represents the fibulare in lower forms; a process on the metatarsus of birds.
By Henderson, I. F.; Henderson, W. D.
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From calx, 'the heel.' Calca'neus, Calcar, Cal'cia, Ichnus, Os Calcis, Pterna, Pter'nium. The largest of the tarsal bones: that which forms the heel. It is situate at the posterior and inferior part of the foot; is articulated above and a little anteriorly with the astragalus; anteriorly, also, with the os cuboides. Its posterior surface-called Heel, Talus, Calx, (F.) Talon-gives attachment to the tendo-achillis: the lower has, posteriorly, two tuberosities, to which the superficial muscles of the sole of the foot are attached. The small Apoph'ysis or lateral Apophysis of the Calca'neiun, (F.) Petit Apophyse ou Apophyse laterale du Calcaneum, is a projection at the upper surface of this bone, on which is formed the posterior portion of the cavity that receives the astragalus. The great Apoph'ysis, anterior Apoph'ysis of the Calca'neum, is the projection which corresponds, on one side, with the cuboides; and on the other forms the anterior part of the facette which receives the astragalus.
By Robley Dunglison
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