DISEASES AND TREATMENT OF THE HORSE 
299 
12. Knuckling. 
Causes. — It is the result of hard 
and fast work. Horses that stand 
straight on the fetlock are more lia- 
ble to knuckle. 
Symptoms. — There is a jerking 
forward of the fetlock every time he 
steps. He stands with his fetlock 
joint bent forward instead of back. 
Treatment. — If a case of long 
standing there can be nothing done, 
but if only coming on blister around 
the fetlock and turn him out. Blis- 
ter with: 
Pulverized Cantharides or 
Spanish Fly 2 drams. 
Vaseline or Lard 1 ounce. 
Mix and apply around the fet- 
lock, rub in well and allow it to 
remain for three days, then grease, 
allow it to remain for a few weeks and blister again. Repeat 
the blistering until the joint gets strong. There will be 
enough in this prescription to blister two fetlocks. 
• 
13. Knuckling in Colts. 
Causes. — A colt that has been kept in the stable with but 
little or no exercise during the winter is liable to come out in 
the spring knuckled in the fetlocks. 
Treatment. — Before turning him out to the field, blister 
about the fetlocks as described in Section 12. In three days 
grease the parts and turn out to pasture. This usually brings 
about a cure in a short time. 
14. Interfering, or Striking the Fetlocks. 
This trouble is mostly met with in colts when they are 
first shod. 
Causes. — It is sometimes caused by shoeing with too 
heavy a shoe and taking the horse on a long trip before he is 
used to it. Some horses naturally travel so close behind that 
they brush the legs together. 
Symptoms. — There is soreness on the inside of the fet- 
locks and sometimes the hair and skin are knocked off. In 
