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Hip dysplasia: a feline population study
G G Keller1, A L Reed, J C Lattimer
1Orthopedic Foundations for Animals, Columbia, MO 65201, USA.
Insights
Feline hip dysplasia affects approximately 6.6% of cats, with incidence varying by breed. Radiographic signs in cats differ from dogs, featuring shallow acetabulums and specific acetabular margin changes.
Area of Science:
- Veterinary Radiology
- Canine and Feline Orthopedics
Background:
- Hip dysplasia is a common orthopedic condition in dogs.
- Limited data exists on the prevalence and radiographic presentation of hip dysplasia in cats.
Purpose of the Study:
- To determine the frequency of feline hip dysplasia.
- To describe the radiographic signs of hip dysplasia in cats.
- To compare radiographic findings in cats and dogs.
Main Methods:
- Retrospective evaluation of ventrodorsal pelvic radiographs from 684 cats.
- Radiographs taken between 1991-1995 at a veterinary teaching hospital.
- Independent assessment by three board-certified veterinary radiologists to establish consensus.
Main Results:
- A prevalence of 6.6% (45/684) for feline hip dysplasia was identified.
- Hip dysplasia incidence demonstrated breed dependency.
- Radiographic signs included shallow acetabulum with cranio-dorsal acetabular margin remodeling/proliferation, differing from canine presentations.
Conclusions:
- Feline hip dysplasia is present in approximately 6.6% of the studied population.
- Breed influences the incidence of feline hip dysplasia.
- Distinct radiographic features characterize feline hip dysplasia compared to dogs.
Abstract:
The study population consisted of cats presented to the University of Missouri-Columbia Veterinary Medical Teaching Hospital from January 1, 1991 through 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 radiologists and a consensus normal of dysplastic evaluation was determined. There were 684 cats from 12 breeds. The data derived from this study indicate the frequency of feline hip dysplasia in this population to be about 6.6% (45/684) and that the incidence appears to be breed dependent. Also, the radiographic appearance of hip dysplasia in cats is different than in dogs. A shallow acetabulum with remodeling and proliferation involving the cranio-dorsal acetabular margin were the most common radiographic signs. Minimal remodeling of the femoral neck was seen.