ANTERIOR TIBIAL NEUROTOMY. 183 



out prominently, in fat horses it is surrounded by a large 

 amount of adipose tissue. Cut through this fat and con- 

 nective tissue and expose the tibial nerve, n, Plate XXX 

 and NS, Plate XXXI, to view ; immediately before it Hes 

 the plantar vein and on the lateral side is situated the re- 

 current tibial artery, SA, Plate XXXI. The cross section 

 in Plate XXXI is located somewhat below the point for 

 operation and the vein has crossed obliquely over the nerve 

 so that it appears behind 'vas\£aA of in front of it, as is the 

 case generally at the point where the operation is performed. 

 Separate the vessels completely from the nerve with the 

 handle of the scalpel, pass two aneurism needles from be- 

 fore backward beneath it and drawing these apart separate 

 the nerve trunk from the adjacent tissues and cut it off at 

 the upper and lower angles of the wound removing a section 

 at least 5 cm. long. Suture the cutaneous wound and apply 

 a bandage allowing it to remain eight days. Healing by 

 first intention. 



42. ANTERIOR TIBIAL NEUROTOMY. 



Nkurotomy of the deep Branch oe the Peroneai, Nerve. 



Plates XXXI and XXXII. 



Object. An adjunct operation to the preceding as it sup- 

 plies sensation to the tarsus in common with the sciatic. 

 The two constitute what is known as Bossi's double neuro- 

 tomy for spavin. 



Instruments. Same as in the preceding. 



Technic. Confine as in the preceding but with the 

 afEected leg uppermost. l,ocate the fiirrow dividing the ex- 

 tensor pedis longus, EP, Plates XXXI and XXXII, and 

 the peroneus muscles, PJ Plate XXXI, MP, Plate XXXII, 

 and shave and disinfect an area 6 cm. long by 3 cm. wide 

 directly over this depression and extending upward from a 

 point 6 to 7 cm. above the tibio-astragoloid articulation. 



