Base of middle phalanx - Basis phalangis mediae

Description

The middle phalanx (second phalanx, os coronale) is shorter but very similar to the proximal phalanx. It is subdivided in a base with articular facet, a body (shaft) and a head (distal extremity).

In horses, the dorsal articular cavity (fovea articularis) is divided by a sagittal ridge the corresponds to the distal trochlea of the proximal phalanx. Its dorsal border is elevated to form the extensor process and the palmar border is thickened to form a transverse prominence called the flexor tuberosity.


Text by Antoine Micheau, MD - Copyright IMAIOS
Veterinary Anatomy of Domestic Mammals: Textbook and Colour Atlas, Sixth Edition - Horst Erich König, Hans-Georg Liebich - Schattauer - ISBN-13: 978-3794528332

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