Peer-reviewed veterinary case report
Hip dysplasia rates in Golden Retrievers and Rottweilers and bias
By Paster, Erin R et al.·Published in Journal of the American Veterinary Medical Association·2005·Department of Clinical Studies, United States·View original on PubMed →
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Original publication title: Estimates of prevalence of hip dysplasia in Golden Retrievers and Rottweilers and the influence of bias on published prevalence figures.
- Species:
- dog
Plain-English summary
A study found that hip dysplasia (a common joint problem) affects a significant number of Golden Retrievers and Rottweilers. In Golden Retrievers, the prevalence was estimated between 53% and 73%, while in Rottweilers, it ranged from 41% to 69%. The research indicated that many dogs with normal hips were less likely to have their x-rays submitted for official evaluation, which may skew the reported numbers. This suggests that the actual rates of hip dysplasia in these breeds could be much higher than what has been previously reported.
People also search for: Golden Retriever hip dysplasia symptoms · Rottweiler hip problems · dog hip dysplasia treatment options
Abstract
OBJECTIVE: To estimate prevalence of canine hip dysplasia (CHD) in Golden Retrievers and Rottweilers and identify sources of bias in published reports. DESIGN: Prospective study. ANIMALS: 200 clinically normal Golden Retrievers and 140 clinically normal Rottweilers between 24 and 60 months of age referred for hip evaluation (group 1) and 93 clinically normal dogs evaluated for Orthopedic Foundation for Animals (OFA) hip certification (group 2). PROCEDURE: Hip-extended pelvic radiographs from group 1 dogs were screened for CHD. Radiographs were evaluated twice; the first interpretation used an OFA-type subjective 7-point scoring system, and the second included the caudolateral curvilinear osteophyte as an additional sign of degenerative joint disease. The OFA submission rate of group 2 dogs was determined from the number of official reports returned from the OFA. RESULTS: Prevalence of CHD in Golden Retrievers ranged from 53% to 73% and in Rottweilers ranged from 41% to 69%. Among dogs referred for OFA evaluation, radiographs from 49 (53%) were submitted to OFA. Of submitted radiographs, 45 (92%) were normal; of radiographs not submitted, 22 (50%) were normal. Radiographs with normal-appearing hips were 8.2 times as likely to be submitted to the OFA. Compared with Golden Retrievers, Rottweiler radiographs were significantly more likely to be submitted for OFA certification. CONCLUSIONS AND CLINICAL RELEVANCE: Prevalence of CHD in these 2 breeds may be much higher than previously reported in the United States. Results suggest substantial bias in the OFA database, which causes lower estimates of prevalence of CHD.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/15702688/