Pelvic bone: The pelvic girdle is the ring

The pelvic girdle is the ring shaped collection of these bones at the base of the spine. In this section, learn more about the bones of the pelvis – the hip, sacrum and coccyx, and the pelvic girdle. Structure The pelvic bones include the following: Two hip bones (ossa coxae) — each made up of the ilium, ischium, and pubis Sacrum — a wedge-shaped bone formed by fused sacral vertebrae Coccyx — a small, terminal bone formed by fused coccygeal vertebrae Ilium The ilium is the broad, fan-shaped superior part of the hip bone . It articulates with the sacrum at the sacroiliac joint and provides attachment for abdominal and gluteal muscles. Key landmarks include the iliac crest, anterior ... Learn about the bony structure, joints and organs of your pelvis, the seat of your trunk and legs. Find out how pelvic shape and sex affect your pelvic anatomy and health. The pelvis is the lower part of the trunk, between the abdomen and the thighs, with its embedded skeleton (bony pelvis) and the pelvic cavity. The bony pelvis consists of the sacrum, coccyx, and hip bones, which connect the spine with the lower limbs and support the reproductive organs and the rectum.