DISEASES OF THE BONES 403 
_ articular surface of the os suffraginis was denuded of carti- 
lage anteriorly; the os corone was fractured into eight 
moderate sized, irregular fragments, and ten minute pieces. 
The surface of the perforans tendon as it glides over the 
smooth surface at the back of the og corone was lacerated, 
and minute portions of the bone were found embedded 
therein.’* 
2. ‘Here, again, fracture was the result of the animal 
bolting with his rider. Trying to avoid collision with a 
conveyance coming towards him, the animal slipped on 
a wooden pavement, sliding along until his near fore-leg 
came in contact with the wheel of a standing cab. There 
was considerable swelling from the knee downwards, great 
pain, and evidence of fracture in the region of the pastern. 
‘Post-mortem revealed the os suffraginis broken into 
about thirty pieces, and the os coronz with a piece broken 
off the inside of its proximal end.’t 
3. ‘The patient was a brown mare used for heavy van 
work in London. About January 10 she was lame, and as 
she had a cracked heel, was treated by poulticing for a day, 
and then by antiseptic lotions. In a week she was sent to 
work, but the following day lameness returned, and con- 
tinued till about February 15. No special symptom was 
detected which indicated the exact position of any cause of 
lameness. Then the lameness increased in severity, and 
some swelling around the coronet began to show itself. 
‘In consultation with another veterinary surgeon, two 
possible causes of this intense lameness were discussed : 
one, that we had septic infection of the coronet, and that 
probably the swelling of this part would soften, and sloughs 
occur; the other, that a fracture of the os pedis or os 
corone existed. The enlargement of the coronet was hard 
and firm, not particularly sensitive. It was decided to do 
nothing for a few days. In a week the pain abated, and 
* HB, Wallis Hoare, F.R.C.V.S., Veterinary Record, vol. xiv., 
p. 183. 
+ A. FE. Appleton, M.B.C.V.S., Veterinary Journal, vol. xiii., 
p. 411. 
26—2 
