450 The Farmer's Veterinary Adviser. 



SPRAIN OF THE FLEXOR TENDON (PEKFOKANS) BEHIND THE 

 HOCK. THOROUGH-PIN. 



This tendon plays over the back of the hook, to the 

 inner side of the bony process which forms its point, and 

 has a large synovial sheath extending above and below the 

 joint. When sprained at this point there is lameness, a 

 tendency to knuckle over at the fetlock, and a round, tense, 

 elastic, fluctuating swelling on each side in front of the point 

 of the hock and in the hollow between the hamstring and 

 the bone. Pressure on the one side causes bulging on the 

 other, and pressure on both causes fluctuation on the line 

 of the tendon below and behind the hock. 



T7-eatment. A high-heeled shoe, rest, fomentations, oi 

 cooling lotions and a purgative. When heat and tender- 

 ness subside, bKster, repeatedly, or even fire when there 

 is reason to suspect disease of the bone. When all lame- 

 ness has passed off leaving only a puffy swelling, or when 

 that has appeared without lameness as the result of ivorJc 



Fig. 69. 



Fig. 69 — Spring bandage for thorough-pin. 



or as a dropsical effusion, apply a spring bandage with two 

 smooth round pads pressing on the inner and outer swell- 

 ings. The accompanying cut may enable any saddler to 

 construct such an instrument, the spring being made of 

 good spring steel and covered with leather. 



DISTENSION OF THE SHEATH OF THE EXTENSOR TENDON IN 

 FRONT OF THE HOCK. 



This causes a tense fluctuating swelling at the front and 

 outer side of the hock. It is rare and not usually injuii- 



