554 



DISEASES OF THE HORSE'S FOOT 



incision along the lower border of the coronary cushion 

 (see Fig. 140), afterwards exposing the lower half of 

 the cartilage by removing a half-moon-shaped portion of 

 the thinned horn and underlying sensitive lamina? (see 

 Fig. 140, h). 



This done, the external face of the cartilage is separated 

 from the skin of the coronet. To do this a double sage- 

 knife is run flatwise between the coronary cushion and the 



Fig. 140. — Excision of the Lateral Cartilage. (After 



MOLLER AND FrICK.) 



a, The thinned horny wall covering the coronary cushion ; h, the lateral 

 cartilage exposed Ijy stri})ping ott' the thinned wall ; c, the sensitive 

 laniinse . 



cartilage, with the convex surface of the blade towards the 

 skin. The knife is then passed backwards and forwards 

 until the necessary separation is accomplished. During 

 these movements of the knife a finger of the unoccupied 

 hand I should follow the knife, and guard the coronary 

 cushion against injury. 



Following this, the inner surface of the cartilage must be 

 also searpated from the structures lying beneath it. To 



