The female pelvis is also considered the spine base and hip pint socket. But its shape is large and broader than the male pelvis. The pelvic bone of females is light in weight but denser. These are present to hold the childbirth during pregnancy and are also responsible for the safe delivery. These pelvic bones are divided into three other bones: sacrum, hip bone, and coccyx. The sacrum bone is wider and shorter. The pelvic inlet has an oval shape. The pubic arch is wider and is greater than 90°.