Learn about the pelvis, the lowermost part of the body trunk, formed by the hip bone , sacrum, and coccyx. Find out its location, parts, joints, functions, and variations in males and females. Bony pelvis ( Pelvis ossea) The bony pelvis is a complex basin-shaped structure that comprises the skeletal framework of the pelvic region and houses the pelvic organs. It is usually divided into two separate anatomic regions: the pelvic girdle and pelvic spine. The pelvic girdle, also known as the hip bone , is composed of three fused bones : the ilium, ischium and the pubic bone . The pelvic spine is the posterior portion of the pelvis below the lumbar spine, composed of the sacrum and coccyx ... 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. 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 ...
