Female hip bones are lighter, thinner, and have less evidence of muscular attachments.The female obturator foramina are triangular, whereas the male's are oval. The female acetabula are smaller and the pubic arch is wider than corresponding structures of a male.Female pelvic cavity is wider in all diameters and is shorter, roomier, and less funnel-shaped. The distances between the female ischial spines and ischial tuberosities are greater than in a male. Female sacrum is wider, and the sacral curvature is bent more sharply posteriorly than in a male. Female coccyx is more movable than that of a male.