DISEASES. 727 



c J* 



Fig. 527.— Direction the Groove should take to remove the Quarter in the Operation 

 for Cartilaginous Qulttor. A B — According to Lafosse. A C— According to Hey. A D. 

 — Aooording to Benault. A S.— According to Latosse and Dietericths. 



too near the heel, and recommends the groove to be so made that 

 the lower border will have the same length as the upper, and for 

 that reason advises that it be as nearly parallel as possible with 

 the line of the heels. Lafosse, Sr., removes too large a portion of 

 the hoof. Lafosse, Jr., leaves a portion of hoof which not only is 

 useless, but which interferes with certain steps of the operation, 

 when with the double sage knife, the skin is separated from the 

 external surface of the cartilage, and also, when this is removed ; 

 and again, there is a separation between the severed portions of 

 the quarters much greater than occiu's in the process of Renault, 

 which, like that of Key, exposes the entire cartilage, and greatly 

 facUitates the operation. 



It is to be understood that the foot has been prepared ; that 

 the hair has been clipped over the skin covering the cartilage; 

 that the sole has been pared thin, down to the blood, as well as 

 the bar corresponding to the diseased cartilage, so that the quarter 

 has been allowed to project below the sole, to facilitate its ever- 

 sion. The foot has been, moreover, well prepared by two or three 

 days of poulticing, to render the hoof easier to be cut by the in- 

 strument, and the operation easier to perform, and therefore 

 shorter in its various steps, beside placing the patient in the best 

 condition for the endurance of so serious an operation. 



After casting the animal upon a good bed, and fixing the feet, 

 placing a temporary hemostasis, by the use of a strong cord, simi- 

 lar to a tourniquet, ai-ound the coronet, a groove is made, using 

 various-sized drawing-knives, running from the anterior angle of 

 the lower border of the cartilage downward to the sole, following 



