130 MANUAL OF MODERN FARRIERY. 



This will be indicated by the horse dragging the limb after 

 him, or by his resting it on the fetlock-joint. The muscles 

 of the inside of the thigh are sometimes sprained, which is 

 known by the heat in all the contiguous parts. 



Remedies. — For dislocation of the patella, the aid of a 

 veterinary surgeon will be absolutely necessary. In case of 

 muscles being sprained, fomentations must be used ; and 

 bleeding in some instances may be necessary, accompanied 

 by doses of laxative medicine, as recommended at page 132. 



THOROUGHPm. 



In treating of wind-galls, we described certain little bags 

 or sacs, containing a fluid for lubricating the joints. These, 

 we mentioned, sometimes become inflamed and enlarged : 

 similar sacs are situated contiguous to the hock-joint, and 

 these also are liable to inflammation, and produce swellings 

 of greater or lesser dimensions immediately under the strong 

 tendon which unites with the cap of the hock. These 

 swellings generally protrude on both sides, in the form of 

 round swellings. Sometimes when the coverings of the 

 tumour yield more readily in one direction than another, it 

 will protrude principally in that part. The nature of the 

 complaint is precisely the same as wind-galls, but from its 

 situation has been termed thoroughpin, (see plate 7, fig. 3, 

 e e, and 5,5 5.) These swellings generally produce stiffness 

 of the joint, which sometimes wears off" when exercise has 

 induced absorption of the fluid which these bags contain. 

 However, it is only when the sacs become large that they occa- 

 sion any inconvenience to the action of the limb. Many per- 

 sons think thoroughpin of but little consequence ; but after 

 a hard day's work, a horse will always manifest stiff"ness in 

 the joint in which these swellings exist. And although a 

 horse cannot strictly be called unsound which is afflicted 



