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Prometheus: Huesos de la cintura pélvica y la cadera
Each pelvic girdle consists of a hip bone (coxal bone, innominate bone), which articulates with the head of a femur. Unlike the shoulder girdle, the pelvic girdle is firmly integrated into the axial skeleton: the paired hip bones are connected to each other at the cartilaginous pubic symphysis and to the sacrum via the sacroiliac joints. These attachments create the bony pelvic ring (red), permitting very little motion. This stability is an important prerequisite for the transfer of trunk loads to the lower limb (necessary for normal gait).