The pelvic bones, also known as the pelvis, form the base of the spine and support the weight of the upper body. They consist of three main parts: the ilium, ischium, and pubis, which fuse together in adulthood. The pelvis plays a crucial role in protecting the organs in the lower abdomen and providing attachment points for various muscles. In addition to its protective function, the pelvic bones are essential for movement and stability. They connect the spine to the femurs (thigh bones) and help facilitate walking, running, and other activities. The shape and structure of the pelvis also differ between males and females, influencing childbirth.