OLAMENESS IN THE HIND LEG 



243 



affection in some animals. It is also frequently observed in 

 young horses and in draught colts of twelve to eighteen months 

 of age. This condition occurs while the subjects are at pasture 



Fig. 56 — Bog spavin. Showing point of view which may be most advan- 

 tageously taken by the diagnostician in examining for distension of the 

 capsular ligament of the tarsal joint. 



and often spontaneous recovery results by the time the animals 

 are two years of age. 



Symptomatology. — Bog spavin is recognized by the dis- 

 tended condition of the joint capsule which is prominent just 

 below the internal tibial malleolus and this affection is character- 



