The Probert Encyclopaedia of Medicine

ILIUM

The ilium is one of the three pelvic bones fused together to form the pelvic girdle. It is the broad, flared portion which constitutes the upper and lateral sections of the pelvis. The ilium is distinct for its ala, or wings, which flare out on either side of the spinal column, resembling an airplane propeller when seen in the side view.
Research Ilium