224 The Diseases of Animals 
FRACTURE OF HIP BONE 
The condition that causes a horse to be “hipped ” 
is due to a fracture of the crest of the ium, at the 
point of the hip. The large muscles attached to the 
bone draw the broken piece downward. It usually 
results from striking the point of the hip against a 
door-post or similar obstacle, and, in some eases, 
from kicks by other animals. It is also seen in cows, 
but not so frequently. No treatment can be ap- 
plied. The animal generally recovers, but the point 
of the hip does not return to its normal condi- 
tion, and the affected hip is noticeably lower than 
the other. This condition rarely causes any inconve- 
nience to the animal, and is only noticeable as a 
blemish. 
ULCERATION OF BONE 
When a bone has been injured so as to destroy 
the tough, fibrous membrane (periosteum) that covers 
the outside, the bone may ulcerate and a runuing sore 
form, which discharges a thin, watery pus. This con- 
dition can usually be recognized by passing a small 
metal probe into the wound, when the hard denuded 
bone can be distinetly felt. This condition usually re- 
quires a surgical operation, cutting down upon the 
injured bone, scraping away the diseased part, remov- 
ing any lumps or splinters of bone that may be found, 
bringing the parts together and treating it as a simple 
wound. A solution of one part of peroxid of hydrogen 
to two or three parts of water injected into such a 
