776 



DISEASES AND THEIR TREATMENT. 



large vein which passes through the integuments involved in 

 spavin. I do not know any distinction between them worthy of 

 mention, especially as there is no treatment given other than that 

 named. 



CAPPED HOCK. 



This is an injury or bruise at the point of the 

 hock, and is usually caused by striking the parts 

 against some hard object. If the inflammation is 

 acute, use cooling applications. When the inflam- 

 mation has subsided, use any ordinary stimulant 

 or blister recommended for the purpose. 



WIND-GALLS. 



FIG. 681. 

 Capped hock. 



Wind-gall is the name given to those soft, puffy swellings found 

 at the back part of the fetlock-joint, from a supposition that they 

 con tabled air. They consist of enlargement 

 of the little sacs, or bags, which are always 

 found to contain a mucous fluid wherever 

 tendons pass over joints, as at the back of the 

 fetlock. This form may be called simple 

 wind-gall. In other cases, the distension is 

 caused by an increased secretion and bulging 

 of the capsular ligament of the joint itself. 

 This form may be distinguished as compli- 

 cated wind-gall. 



Few horses that have done any work are 

 free from them, and unless dependent on some 

 more serious lesion than simple distension of 

 these bursce mucosce, they are of no conse- 

 quence. 



Causes. Hard work is the well-known 

 cause of wind-gall. In rapid motion, or 

 heavy draught, the friction of the tendons is 



greatly increased; consequently an increased secretion of synovia 

 is required, and takes place in all synovial sacs during exercise ; 

 but if the action be not so violent as to strain the parts, it is speed- 

 ily re-absorbed. On the other hand, if the exertion be inordinate, 



FIG. 682. An ordinary 

 capped hock. 



