feADlCAL OPERATIONS FOR QUITTOR 



321 



end of the cartilage. The groove, made with the horse- 

 shoer's knife, is cut completely through the hoof until the 

 sensitive laminae and coronary cushion at each en'd are vis- 

 ible and bleeding throughout its whole length. The semi- 

 circular section thus isolated is then carefully torn off with 

 the pincers, after having been pried up with the blunt chisel. 

 The step is completed by trimming off hanging portions of 

 the perioplic ring which may adhere to the skin along the 

 upper maYgin of the coronary cushion. 



This step may be executed in part before the animal is 

 cast. The groove may be made in the hoof and the whole 

 section to be removed may be trimmed down to a thin layer, 



Fig. 155 — Bayer's Operation for Quittor. First Step. 



but as a bulky portion of hoof can be torn off with much less 

 injury to the sensitive laminae than a thin one, the aforemen- 

 tioned method is by far more preferable. 



Second Step. — Making the Flap to Expose the Cartilage, 

 — Moore's Method: — Beginning at a point just below the 

 coronary cushion and three-eighths of an inch from the edge 

 of the hoof incision anteriorly, a. similar incision is made 

 through the sensitive laminae, following the entire semi- 

 circle three-eighths of an inch inwardly, so as to leave space 

 for reuniting the incision with sutures. Posteriorly the in- 

 cision is carried through the coronary cushion and enough of 

 the surmounting skin to make a supero-anterior flap that will 

 expose the whole cartilage. The laminae are now carefully 



