WOUNDS 229 



animal is afterwards more or less a walking exhibition 

 of the limitations of surgery, while the owner, unless the 

 animal is valuable for the purpose of breeding, finds 

 himself encumbered with a life that is practically useless. 

 (See Treatment of Purulent Arthritis, Chapter XIL) 



III the case of Lameness Persisting after the healing of all 

 appreciable lesions, then neurectomy is followed by good 

 results. The animal, apparently recovered, is for a long 

 time useless. Lameness persists for several months, as if 

 the nail had at the moment of its penetration caused lesions, 

 which doubtless it sometimes does, similar to those of 

 navicular disease. Examination of the foot in this case 

 reveals no lesion, and the pain has evidently a deep origin. 

 The lameness caused by it is subject to variation. Fre- 

 quently it becomes lessened during rest, and increased by 

 hard work, while sometimes it is very much more pro- 

 nounced at starting than after exercise. 



It is here that neurectomy is called for. The operation 

 does nothing to impede the work of healing going on, and 

 allows free movement of the foot and pastern to take place. 

 At the same time suffering and emaciation cease, and the 

 animal is rendered workable.* 



C. COEONITIS (SIMPLE). 

 Tread, Overreach, etc. 

 1. Acute. 

 Definition. — Under the heading of simple coronitis in its 

 acute form we intend to describe those inflammatory condi- 

 tions of the skin and underlying structures of the coronet 

 occurring without specific cause. Specific coronitis will be 

 found described in Chapter IX. 



Causes. — This condition is almost invariably set up by an 



injury — either a bruise or an actual wound— to the coronet. 



By far the most common among such injuries are those 



inflicted by the animal himself by means of the shoes. 



That known as ' tread ' is caused by the shoe on the 



* Veterinary Record, vol. ii., p. 371. 



