PTGFR and Hip dysplasia: These results indicate the variations in the pedigree segregating DDH in TENM3 (OMIM * 610083, chr4:183721398), HSPG2 (OMIM * 142461, chr1:22201470), ATP2B4 (OMIM * 108732, chr1:203682345), and PTGFR (OMIM * 600563, chr1:79002214) are not associated with susceptibility to DDH in the Chinese Han population.