The Phalanges and Sesamoids

The axis of the phalanges of the hind limb is about five degrees less oblique than that of the fore limb, and the chief differences in the form and size of the bones are as follows:

The first phalanx is a little shorter, wider above, and narrower below.

The second phalanx is narrower and slightly longer.

The third phalanx is narrower, the angle of inclination of the wall surface is a little (ca. 5 degrees) greater, the sole surface is more concave, and the wings are less prominent and closer together.

The proximal sesamoids are a little smaller, except in thickness. The third sesamoid or navicular bone is narrower and shorter.