. The principles and practice of veterinary surgery . ofthe true hock joint, acting un-favourably on the cuneiformsand metatarsals, was the causeof spavin. Professor Barlowsaid spavin was due to com-pression of the cuneiforms dur-ing extreme flexion. Other patholo-gists maintain that concussion, pro-duced when the foot comes forciblyto the ground, is the sole cause. Itis not my intention to discuss whichtheory is correct. In all probabilitythey are all more or less so. Bone-spavin is but very rarely foundon the outer side of the hock. Percivallsays that he would not be sure that anexostotis up
. The principles and practice of veterinary surgery . ofthe true hock joint, acting un-favourably on the cuneiformsand metatarsals, was the causeof spavin. Professor Barlowsaid spavin was due to com-pression of the cuneiforms dur-ing extreme flexion. Other patholo-gists maintain that concussion, pro-duced when the foot comes forciblyto the ground, is the sole cause. Itis not my intention to discuss whichtheory is correct. In all probabilitythey are all more or less so. Bone-spavin is but very rarely foundon the outer side of the hock. Percivallsays that he would not be sure that anexostotis upon the outside would becalled a spavin, and that it is comnilythe result of injury ; but I have aspecimen in my possession, presentedby Mr. Stevenson of Is^ewcastle, with Fm. spavin in this unusual position, originating from no apparentcause, and wtich produced an incurable lameness; but I haveseen several cases from which the lameness entirely disappeared. Spavin arises from causes that are hereditary or constitu-tional and 304 PARTICDLAE LAMENESSES. The hereditary predisposition to bone-spavin is beyond doubt,all writers of authority being agreed upon the point, which isalso well known to breeders of horses. This hereditary pre-disposition is not always due to peculiarity of conformation,as many breeds or families of horses with well-formed hocksoften become unsound from this cause. Peculiarity of confor-mation is nevertheless not only hereditary, but is of itself a pre-disposing cause of spavin. Percivall says— I am very much disposed to believe in the existence in the system of what I would call an ossific diathesis. I have most assuredly seen unbroke colts so prone in their economy to the production of bone, that, without any assignable outward cause—without recognisable injury of any kind—they have at a very early age exhibited ring-bones, and splints, and spavins. There might have been something peculiar in the construction of their limbs t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectveterin, bookyear1904
