242 The Diseases of Animals 



the name, "thorough -pin." The causes and treatment 

 are the same as for wind -puffs. A pad or truss is also 

 made that can be applied as for a bog-spavin. 



CURB 



A curb is a bulging or thickening of the ligaments 

 and other tissues on the back part of the hock, just 

 below the point, giving to that part a curved, bulging 

 outline instead of the straight line that is normally 

 presented when the hock is viewed from one side. 



Some horses' hocks, because of their rough, weak 

 appearance, are called by horsemen "curby" hocks. 

 They seem to show predisposition to this disease. The 

 exciting causes are severe strains on the hock -joint, 

 such as may occur by heavy pulling, and especially 

 by rearing and jumping. Such movements are often 

 spoken of by horsemen as liable to "spring a curb." 



There is usually lameness, associated with some 

 inflammation, at the back part of the hock, followed 

 by the appearance of a bunch, or thickening, of that 

 part. The lameness frequently disappears, but the 

 enlargement persists, leaving a blemish more or less 

 marked. An animal having a curb is always unsound, 

 being unfitted for fast work. But this lameness may 

 not seriously interfere with his usefulness as an ordinary 

 work -horse. 



In treating curb, the horse should have rest and a 

 high-heeled shoe on the foot of the affected leg. Mild 

 counter-irritants, in the form of liniments, tincture of 

 iodine or iodine ointment, or light blisters applied to 



