330 SYNOVIAL ENLARGEMENTS. 



ing mares. Thoroughpins are frequently seen, as a result of work, 

 among hunters which have gone through a few hard seasons. In 

 such cases, when small and when unattended with lameness or 

 local heat, they are not an unsoundness. 



See " General Treatment,'^ p. 323. 



Mr. J. S. Barber, M.R.C.V.S., tells me that he has always had 

 excellent results in the treatment of thoroughpin, by rubbing 

 oleate of mercury of a ten per cent, strength on the enlargement 

 with a stiff brush once a day for three days, and, if necessary, 

 repeating the application after an interval of a week. 



Windgall of the Knee. 



I venture to apply this arbitrary term to a synovial enlarge- 

 ment which sometimes appears on the outer side, and on the upper 

 part of the knee, and which consists of dropsy of the bursa of the 

 tendon of the flexor pedis perforans, which is the front one of the 

 two back tendons (Fig. 6, p. 31). In some cases, it attains the size 

 of a man's fist. I have never seen it among saddle-horses ; but 

 have occasionally met with it amo'ng cartr-horses, the usefulness of 

 which it did not seem to injuriously affect to any marked extent. 



See " General Treatment," p. 323. 



Capped Knee 



is a dropsical condition of one or both of the synovial bursae of 

 the tendon (ertensor metacarpi magnus) which passes over the 

 front of the knee. It is usually caused by blows. It may also 

 occiu*, especially when hunting or steeplechasing, from a thorn 

 (p. 99) puncturing the tendon which plays over the bag containing 

 the joint oil in front of the knee. When this accident happens, 

 inflammation is set up in the tendon, with the result of an effusion 

 of serum into the bursas. 



Capped knee is of very little consequence when it is simply a 

 distended condition of the synovial bursse ; but if the tendon be 

 also affected, it is a serious complaint, and will be accompanied 

 with more or less lameness. 



TREATMENT.— If the case does not yield to the effects of rest, 

 massage (p. 664), and pressure (p. 45), we may rub into the part, 

 with a certain amount of friction, liniment of iodine two or three 

 times a day. If the swelling still continues, we should stimulate it 

 with biniodide of mercury (1 to 8 of lard). The synovia in the dis- 

 tended bursa may, then, become absorbed on undergoing a further 



