Outlines of human osteology / by F.O. Ward.

  • Frederick Oldfield Ward
Date:
1876
Catalogue details

Licence: Public Domain Mark

Credit: Outlines of human osteology / by F.O. Ward. Source: Wellcome Collection.

    331/392 page 311
    When we ali^rht, in .iumping, xipon the anterior ex- tremitv oT the pedd arch, part of the force of impact ben^l' ke ankle-ioint, depresses the heel, and tells npon the muscles of the calf, which yield to it in the manner of aTprin.. while another portion, which increases as the foot is pointed more directly downward during the con- ion msses longitudinally through the tarsus to the it^'^Xth thi^s latter portion that we are at present conc;m d ; and its distribution will be readdy understood bv thT aiciof the subjoined diagram which represents he tarsus and the posterior part of tl-Bietai.ii-sus as seen from above. A A is the calcaneum, h the cuboid, C C the astragalus, B the scaphoid, E, F, and G, the internal, middle, and ex- ternal cuneiform bones ; while the figures 1, 2, 3, 4, 5 are placed each upon the metatarsal bone of -which it is the nume- rical appellation. The arrows I, m, n, o, and p, show the direction in •which the force arrives ; and the smaller arrows, hb, cc, d d,ee.ff, H, hh, indicate its subsequent distribution. The three cuneiform bones (KFG), run ob- liquely forward and out- irord'irorn the scaphoid bone; v.hile the three first metatarsal bones (1, 2, Z), which they re- f5j>ective!y support, run obliquely forward and intrard. Thus each cu- neiforrri bone forins, with the corresponding rneta- . v i i i. tarsal bone, an obtuse angle having its apex directed out- ward. From this arrangement it results, that concussioa transmitted through the f.rst n,etatarsal to tlu; internal CTineiforrn bone, is divided in the manner uulicated l,y the arrow.H hh, a portion passing on to the scaphoid [JJ),
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