Principal component analysis loadings from an analysis of EBVs for nine British Veterinary Association hip traits (BVAHTs) calculated using ordinal logistic regression.

The signs associated with the loadings are arbitrary in the sense that the signs of all the loadings within any column can be switched. NORB =  Norberg Angle; SUBL =  Subluxation; CrAE =  Cranial Acetabular Edge; DAE =  Dorsal Acetabular Edge; CrEAR =  Cranial Effective Acetabular Rim; AF =  Acetabular Fossa; CaAE =  Caudal Acetabular Edge; FHNE =  Femoral Head and Neck Exostosis; FHR =  Femoral Head Remodelling.