1074 DISEASES OF THE FOOT. 



then the anterior, portion of the cartilage. The knife should not 

 wound either the coronary band or the cartilage. 



The cartilage exposed, the operator seizes one of the single-edged 

 knives, slides it into the wound with its cutting edge directed upwards 

 and backwards, passes it behind the posterior extremity of the 

 cartilage by executing a half turn of the instrument, and then with 

 one stroke from within outwards, removes the posterior half of the 

 cartilage, taking care not to injure the upper border of the sensitive 



Fh !. 571. — Celluloid injection preparation of the veins and arteries of the foot prepared 

 by maceration. The veins are light in colour, the arteries dark. 



membrane, which ought to be reflected. In some cases there is 

 very little cartilage at this point to remove, the greater portion having 

 become necrotic and been replaced by fibrous tissue, which should 

 be spared. 



This completed, the toe of the foot is, by means of a cord passed 

 round the fetlock and hoof, extended as far as possible to facilitate 

 removal of the anterior half of the cartilage. The knife is then 

 held horizontally, its convex surface downwards, and the rest of the 

 cartilage separated from underlying structures, and removed with 

 forceps. By thrusting the finger under the coronary band, it is 

 easy to discover whether portions of the cartilage have been left. 



