What is the significance of the massiveness of the pelvic bones for a person?

The pelvis forms the base of the spine as well as the socket of the hip joint. The pelvic bones include the bones of the thigh, sacrum, and tailbone. Women’s pelvic bones are usually larger and wider than those of men. This means that the baby can pass through the pubic exit, the circular opening in the middle of the pelvic bones, during labor. For this reason, the width of the pubic arch, or the space under the base of the pelvis, is also wider. A man’s pelvis is usually narrower and smaller than a woman’s because they needed to be fast runners when hunting.