626 



OPEEATIONS ON THE FOOT. 



Pig. 495.— Operation of simple 

 Toe Crack by the process of thin- 

 ning down the wall in V-shape. 



moval of a V-sliaped portion of the lioof, 

 extending more or less deeply, accord- 

 ing to the condition of tlie crack, care 

 being observed to avoid tlie growth of 

 vascular granulations between the edges 

 of the crack. There are cases where it 

 is not necessary to remove the segments 

 of the hoof entirely down to the soft tis- 

 sues, but only to thin them down and to 

 apply over it a dressing of oakum, se- 

 cured by several turns of roller band- 

 ages. In all cases a bar shoe must be 

 applied to relieve the pressure on the quarter where the crack 

 exists. This is principally recommended by Prevost, Gii"ard and 

 others. 



If there are deep lesions of the sub-horny tissues, a piece of 

 the waU must be removed, and the operation for radical cure be 

 performed. It is an old operation, by which all diseased tissues 

 are exposed. As little of hoof as possible is removed. In ojjerating, 

 two grooves will be made alongside and at some distance from 

 the solution of continuity. The wall between is removed so as to 

 exjoose the podophyllous tissues from the coronary band down to 

 the sole, care being taken to avoid the tearing of the structure of 

 the coronary band, and the diseased tissues are then removed. If 

 the podophyllous tissue, it is excised with the sage knife ; if the 

 bone is carious, it is scraped with the drawing knife. The whole 



Fig. 496.— Operation for Com- 

 plicated Toe Crack B, by removal 

 of a piece of the toe of the wall, 

 yl .4.— Oblique grooves limiting 

 the size of the piece to remove. 



Fig. 497.— Dressing for Complicated Toe Crack. 



