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.