We found five genes that were significantly associated with DDH susceptibility: GDF5, UQCC1, MMP24, RETSAT and PDRG1 (P = 9.24 × 10−12, P = 1.86 × 10−10, P = 3.18 × 10−9, P = 3.70 × 10−8 and P = 1.06 × 10−7, respectively). Here, GDF5 is linked to Hip dysplasia.