File:The Horse - its treatment in health and disease, with a complete guide to breeding, training and management (1905) (14760970771).jpg

Identifier: horseitstreatmen01axej (find matches)
Title: The Horse : its treatment in health and disease, with a complete guide to breeding, training and management
Year: 1905 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London : Gresham
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

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none calls for such carefulscrutiny and analysis of detail both as to conformation and soundness. Two sets of bones enter into the construction of the hock-joint, eachhaving a purpose of its own. One group of four small bones (1, 2, 3, 4in Fig. 67), arranged in two rows and resting on the head of the canon,are united together and to adjacent bones by short, powerful ligaments,and so close is the union that the movement of one bone upon the otheris reduced to a simple gliding action of the most limited extent. Thismovement, slight though it be, is of the first importance in breaking thejar communicated to the joint in the act of progression. The second division comprises two large bones — the astragalus andthe calcaneus. The former presents in front two smooth, prominentridges and a deep, intervening furrow, after the fashion of a jjulley,which, when articulated with a corresponding formation on the lowerextremity of the tibia or leg bone, form a joint whose action in the PLATE XIII.
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HOCK 87 direction of flexion and extension is marked by great range andfreedom. The calcaneus serves an entirely different purpose. Forming thepoint of the hock, to which are attached strong tendons (fig. 23), itrepresents a lever more or less powerful in proportion as it is long orshort. The examination of this joint should be made from various stand-points, so that all its dimensions as well as its general outline may beduly appreciated. The first and most important requirement ofthis reoion is size. The hock should be large,shapely, and well directed. The calcaneus, or boneforming its point, should be long, so that thelever of which it forms an important part isincreased in length and power, while width andstrength are at the same time imparted to thegaskins (Plate XIII, fig. 1). Viewed in profile it should be wide from frontto back and rest on correspondingly broad canons;any narrowing or tying in (Plate XIII, fig. 2)at this part is a serious defect of conformation. Seen from befo

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