108 



DISEASES OF THE CLAWS IN CATTLE AND SHEEP. 



After extensive necrosis of the os corona?, or purulent inflammation 

 of the coronet-joint, it may be necessary to remove the coronet bone 

 along with the lower end of the os suffraginis. The animal is fastened as 

 above described, and an Esmarch's bandage applied. The skin above 

 the bulbs is then divided, either at the outer or anterior and posterior 



Fig. 584. — Disarticulation of the ox's claw. A. Extensor pedis tendon; B, interna] 

 lateral ligament ; C, external lateral ligament ; I), os corona), E. navicular bone ; 

 F, perforans tendon ; G, plantar cushion. 



faces of the phalanges, and separated from underlying structures, the os 

 suffraginis being then sawn through in an oblique direction, from 

 above downwards. After checking haemorrhage, the point of operat ion 

 is cleansed, disinfected, and the flaps of skin cut to shape and sutured 

 under the stump. The above-described dressing may be left in 

 position for eight to ten days, and seldom requires to be renewed 

 more than two or three times before healing becomes complete. 



