Hip dysplasia: A feline population study

The study population consisted of cats presented to the University of Misso uri-Columbia Veterinary Medical Teaching Hospital from January 1, 1991 thro ugh December 31, 1995, Ventrodorsal radiographs including the pelvic region were evaluated for radiographic evidence of hip dysplasia, Each radiograph was evaluated independently by three board-certified veterinary radiologis ts and a consensus normal of dysplastic evaluation was determined. There we re 684 cats from 12 breeds. The data derived from this study indicate the f requency of feline hip dysplasia in this population to be about 6.6% (45/68 4) and that the incidence appears to be breed dependent. Also, the radiogra phic appearance of hip dysplasia in cats is different than in dogs. A shall ow acetabulum with remodeling and proliferation involving the cranio-dorsal acetabular margin were the most common radiographic signs. Minimal remodel ing of the femoral neck was seen.