82 THE VETERINAEIAN 



TAPEWORM 

 (Taenia) 

 These worms have been found in the horse, but so 

 rarely that they need not be considered. 



THOROUGHPIN 



Cause : Generally due to some irritation of the hock 

 joint such as severe sprains from animal jumping, slip- 

 ping, kick or falling through a culvert or bridge or it is 

 frequently hereditary; so be very careful in choosing a 

 sire when breeding. 



Symptoms; Sometimes there is lameness when the 

 Thoroughpin is first noticed, but it will gradually disap- 

 pear as soon as the inflammation ceases. There will be 

 a puffy, soft enlargement which occurs at the upper and 

 back part of the hock, beneath the great tendons. Gen- 

 erally both sides are enlarged and puffy, but occasionally 

 it happens that one side is only involved. Thoroughpin 

 is also a forerunner of Bog Spavin as they generally are 

 connected, as you are aware that the hock contains joint 

 oil as all other joints do, retained in place by a thin, white 

 fibrous membrane. Irritation of the hock joint tends to 

 develop an extra large quantity of joint oil, and the hock 

 is less protected by tendons where a Thoroughpin or Bog 

 Spavin occurs — ^hence those puffy swellings are filled 

 with joint oil and are connected. If you press on one 

 siae of a Thoroughpin, you will see the other side bulge 

 out. If you press on a Bog Spavin and there is a Thor- 

 oughpin present, you will see it bulge on either side of 

 the Thoroughpin — or vice versa. 



Treatment : If on an old horse and the Thoroughpin 

 is of long standing, treatment is unsatisfactory, but on 

 the other hand if the animal is young it can be success- 

 fully treated with Tincture of Iodine, one ounce; Gum 

 Camphor, two ounces ; Gasolene, one pint. Mix well and 

 rub in with nail or tooth brush twice a week. Keep the 

 animal as quiet as possible as the results will be accom- 



