part of part of Homo sapiens innominate bone zone of bone organ anterior gluteal line of ilium of os coxa 2026-03-19T00:00:00Z A zone of bone organ forming a curved ridge on the gluteal surface of the ilium of the os coxa (innominate bone), running from the iliac crest toward the greater sciatic notch and separating the areas of origin of the gluteus medius superiorly from the gluteus minimus inferiorly. David Osumi-Sutherland