<P> The hip bone ( os coxa , innominate bone , pelvic bone or coxal bone ) is a large flat bone , constricted in the center and expanded above and below . In some vertebrates ( including humans before puberty ) it is composed of three parts : the ilium , ischium , and the pubis . </P>
<P> The hip bone ( os coxa , innominate bone , pelvic bone or coxal bone ) is a large flat bone , constricted in the center and expanded above and below . In some vertebrates ( including humans before puberty ) it is composed of three parts : the ilium , ischium , and the pubis . </P>
three bones that fuse to form the os coxae
three bones that fuse to form the os coxae
ilium , ischium , and the pubis .
ilium , ischium , and the pubis .