358 TIIlc JARM DOCTOR. 



cord across the outer side of the bone in place of over its 

 summit It seems impossible to restore it to its place, as the 

 band which fixed the tendon to the inner part of the bony pro- 

 cess has given way. Fortunately the animal is often little in- 

 commoded after the subsidence of the preliminary inflammation, 

 and I have known one do excellent carriage work, the only 

 objection being the unsightliness of the hock. 



SPRAIN OF THE FLEXOR TENDON (PERFORANS) BEHIND THE 

 HOCK. THOROUGH-PIN. 



This tendon plays over the back of the hock, 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. 



Treatment. — A high-heeled shoe, rest, fomentations, or cool- 

 ing lotions and a purgative. When heat and tenderness 

 subside, blister repeatedly, or even fire when there is reason to 

 suspect disease of the bone. When all lameness has passed 

 off, leaving only a puffy swelling, or when that has appeared 

 without lameness as the result of work or as a dropsical effusion^ 



Fls:. 69. — Spring bandage for thorough-pin. 

 apply a spring bandage with two smooth round pads picssing 



