386 
W. J. COATES. 
provement, however, the owner decided to place her under our care. 
On admission to the hospital she was found lame on the off 
hind leg. This was carried in abduction, with a limited flexion 
at the hip joint. She walked carefully on it, but trotting was, of 
course, impossible. The ischial region, posterior to the joint, 
was slightly deformed by swelling, while the measurements be¬ 
tween the sacral spine and the external angle of the ilium on 
the right side was somewhat shorter than that of the left. On 
rectal examination, a large thickening was detected on the floor 
of the pelvis to the right side of the median line. In moving 
the whole extremity, a sensation of crepitation was plainly felt. 
Diagnosis : Fracture of the floor of the pelvis posterior to 
the acetabulum, with incomplete repair. 
Prognosis : Unfavorable, on account of the age of the animal 
and of the length of time since the accident took place. 
Treatment was not advised, but the owner requested it, 
even in presence of the prognosis. 
The mare was then placed in slings and immobilized^ as 
much as possible. Some four weeks later she was taken from 
the slings ; she walked quite firmly and was anxious to trot. 
She was then placed in a large box stall to allow her to move 
about. After a short time she lay down and finding it difficult to 
get up alone, she was raised. At first she was quite sore and 
a little lame. She was then secured in the slings again, and 
left there for a week longer, when, having become restless and 
full of energy, she was once more let loose. 
Some hours after she lay down, and after a short time, tried 
in vain to get up alone. She was then raised again, and 
when standing, a fracture of the left femur on the left side 
was detected. The marc was immediately destroyed. 
At the post mortem a comminutive fracture of the femur was 
exposed, the bone being crushed in the middle of the body in 
three longitudinal pieces and several smaller ones. The bone 
was considerably thinner than usual, the compact layer being 
scarcely more than a line in thickness. 
The fracture of the pelvis was repaired. A large callus 
covered the ischial portion of the floor of the pelvis and the 
