Worldwide Screening for Canine Hip Dysplasia: Where Are We Now?

Abstract

ObjectiveTo critically review the different screening systems used for canine hip dysplasia (CHD) and their impact on the prevalence of the disease.Study designCritical literature review.MethodsLiterature search throughPubMed (November 1959–October 2011) and theOrthopedicFoundation forAnimals (OFA),FédérationCynologiqueInternationale (FCI),BritishVeterinaryAssociation/KennelClub (BVA/KC), andPennsylvaniaHipImprovementProgram (PennHIP) websites.ResultsTheOFA,FCI, andBVA/KCscreening methods, which use the hip‐extended radiographic projection, have had relatively minor success onCHDprevalence. These screening approaches are prone to conflicting data regarding interobserver agreement. ThePennHIPandDorsolateralSubluxation (DLS) systems, both distraction methods, have not reported on prevalence but seem to be important heritable traits in genomic screening of dysplastic dogs.ConclusionA shift towards genome screening yields a promising future combatingCHD, although further investigation towards fine‐mapping in the search for genes, responsible forCHD, is necessary.