NERVE, VEIN, AND ARTERY OF THE PASTERN AND FOOT. 245 



^hich, from taking an oblique direction, it forms an obtuse 

 angle. Ii is connected with the cannon and coronet bones, 

 and with the two sesamoids. 

 e. Tlio sesamoid bones, or os sesamoidea. These are situated at 

 the back of the articulation formed by the pastern and cannon- 

 bones. They are articulated only with the large metacarpal 

 bone, and are connected both with that and the pastern-bone. 



TEONT VIEW OF THE PASTERN. 



PLATE VI. Figs. 4, 5, and 6. 



We have described some of the injuries to which the 

 fetlock is liable, page 123. 



a. The coffin-bone, or os pedis. The outline of its form is semi- 

 lunar, convex before and above, concave below and behind. 



b. The navicular-bone, or os naviculare. 



c. The lower pastern, or os corona. 



d. The upper pastern, or os snffraginis. 



NERVE, VEIN, AND ARTERY OF THE PASTERN 



AND FOOT. 



PLATE VI. Fig. 7. 



This gives a representation of the nerve on the inside of 

 the foot as it approaches the fetlock and passes over the 

 pastern. It will be -noticed that branches are given off 

 above the fetlock, which proceed to the fore part of the 

 foot and give it feeling. The continuation of the nerve 

 under the fetlock principally supplies the quarters and 

 hinder parts of the foot. 



This figure is intended to show the parts and situation of 

 the vein, artery, and nerve, which has been operated upon 

 during diseases of the foot, to alleviate the pain the animal 

 suffers under some of these affections. This is termed 

 neurotomy, or cutting of the nerve. 



