298 



DISEASES OF THE HOESE'S FOOT 



3. Keraphyllocele. 



Definition. — By this term is indicated an enlargement 

 forming on tlie inner surface of the wall. In shape and 

 extent these enlargements vary. Usually they are rounded 

 and extend from the coronary cushion to the sole, sometimes 

 only as thick as an ordinary goose-quill, at other times 



Fig. 132. — A Portion of the Horn of the Wall at the Toe 



REMOVED IN ORDER TO SHOW A KeRAPHYLLOCELE ON ITS InNER 



Surface. 



reaching the size of one's finger. Often they are irregular 

 in formation and flattened from side to side. 



Causes. — Keraphyllocele is very often a sequel to the 

 changes occurring at the toe in laminitis. Probably, how- 

 ever, the most common cause is an injury upon, or a crack 



