In some vertebrates (including humans before puberty) it is composed of three bones; ilium, ischium, and pubis.
The hip bone of the pelvic bone/girdle is composed of three bones, the ilium, the ischium and the pubis.
As in many other titanosaurs, the ischium was relatively short, measuring only 2/3 the length of the pubis.
The hips were composed of three bones each, namely the ilium, ischium, and pubis bones.
The shaft of the ischium is flattened sideways.
The ischium is the strongest of the three bones that forms the hip bone.
On the ischium there may be an obturator process and/or a proximodorsal process.
Below, it is continuous with the pelvic surfaces of the ischium and pubis, only a faint line indicating the place of union.