204 



HEALTH AND DISEASE 



The Cuboid is a small irregularly-shaped bone situated on the outer 

 and back part of the hock, having the calcis above it and the large and 



outer small metacarpal 

 bones below. Inwardly, 

 it articulates with the 

 cuneiform magnum and 

 the cuneiform medium. 



The Cuneiform 



Magnum is a flat bone 

 covered on its two surfaces 

 with cartilage. It occupies 

 a position between the 

 astragalus above and the 

 cuneiform medium below, 

 and articulates besides 

 with the cuboid, the cal- 

 cis, and the cuneiform 

 parvum. 



The Cuneiform 



Medium is a triangular 

 bone, and, like the mag- 

 num, presents two flat- 

 tened surfaces for articu- 

 lation with the magnum 

 above, and the large 

 metacarpal or canon-bone 

 below. By smaller articu- 

 lations it is also connected 

 with the cuboid and the 

 cuneiform parvum. 



The Cuneiform 



Parvum, the smallest 

 bone in the hock, is situ- 

 ated at the inner and in- 

 ferior part of the joint, in- 

 clining backwards, where 

 it articulates with the 

 large and inner small 

 metatarsal bones below, the magnum above, and the medium in front. 

 The outer surface of this bone presents a smooth surface over which one of 

 the tendinous branches of the flexor metatarsi plays in a synovial sheath. 



Fig. 312. Bones of the Hock separated 



1 Tibia. 2 Os Calcis. 3 Astragalus. 4 Cuneiform Magnum. Cuboid. 

 4 Cuneiform Medium. 7 Small Metatarsal Bone. 8 Large Metatarsal Bone. 



