Identifier: horseitstreatm05axej (find matches)
Title: The horse, its treatment in health and disease with a complete guide to breeding, training and management
Year: 1906 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London, Gresham Pub. Co.
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries

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and the rest forms the region of thecoronet. Its upper extremity presents two Fg-sos.-OsCoroiKcan.i OsNavicuiare J^l _ . (Anterior Aspect) shallow depressions, with which the two con-dyles of the lower end of the large pastern articulate. The lower end,like that of the sutfraginis, is divided by a shallow groove into two con-dyles, Ijy which the bonearticulates with the os pedis.The tendon of the extensorpedis muscle is attached tothe anterior surface, and thatof the flexor pedis perforatusto the inner and outer partof the superior border behind.At the upper and posteriorpart it is flattened andcovered by fibro - cartilage,thus forming a smooth sur-face over which the tendonof the flexor perforans freelyplays in its course towardsthe foot-bone. Os Pedis (figs, 306,307), coflin-bone, or thirdphalanx. The coflin-bone iscontained in the hoof, of theshape of which it in a large measure partakes. It is a porous bone,having a number of holes in its front and sides for the passage of blood-
Text Appearing After Image:
Fig. 306.—Os Pedis (Plantar Aspect) Inferior Border. B Semilunar Crest. c Plantar Foramina.D, D Retrossal Processes. 200 HEALTH AND DISEASE vessels, and is besides generally roughened for the attachment of thesensitive laminse. A pointed process (coronal process) projects upwardfrom the superior border in front, which affords attachment for the tendonof the extensor pedis muscle. The under surface is concave, and presents (1) a crescentic ridge (semi-liniar crest) to which the tendon of the flexor pedis is attached; (2) behindtills two considerable openings (plantar foramina), through which passthe plantar arteries and nerves; (3) still farther back a roughened surface,to which the inferior ligament of the navicular bone is connected. Theupper surface is divided by a slight ridge into two shallow cavities, withwhich the lower extremity of the coronet bone articulates. At the posterior border of this surface anarrow, smooth, transversespace is provided for thearticulation of the navi

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