568 VETERINARY SURGICAL THERAPEUTICS. 
species of chronic arthritis, whether it is due to rheumatism, trauma- 
tism, or even through a disease of the nervous system. Arthritis defor- 
mans would be a possible result of most of the arthropathies ; its physiog- 
nomy would be due less to the primitive nature of the arthritis than to the 
general nutrition of the subject and the local condition of the affected leg.* 
Fig. 117.—Dry arthritis of the stifle joint (from a photograph). 
Monoarticular, they sometimes have a traumatism for cause; polyar- 
ticular, it is ordinarily related to a general affection. The lesions, 
always characteristic, are the result of two simultaneous processes: one 
destructive, producing the elimination of the epiphysar cartilages and the 
1Quenu: Traité de Chirurg. de Duplay and Reclus, t. IIL., p. 414. 
