In this section, learn more about the bones of the pelvis – the hip, sacrum and coccyx, and the pelvic girdle. The pelvic girdle is the ring shaped collection of these bones at the base of the spine. It does not serve any function, but acts as a point of attachment for a few muscles and ligaments. The coccyx, commonly referred to as the tailbone, is the smallest of the pelvic bones, and sits inferiorly to the sacrum. The hip bone is not considered an irregular bone, rather it is classified as a flat bone. ![]() It is formed by the fusion of five sacral vertebrae, and transmits the sacral nerve fibres of the cauda equina. It is the largest bone in a pelvis and is located at the upper part of the pelvis. The sacrum is located inferiorly to the spinal vertebrae, and posteriorly within the pelvis. These are separated by cartilage at birth and fuse during puberty. The hip bone has three parts: the ilium, pubis and ischium. These bones also act as attachments for many muscles and ligaments within the pelvis and lower limbs. The ilium has four major protruding areas that are. These bones connect the axial skeleton to the lower limbs, and therefore play a role in bearing the weight of the upper body. The superior part, called ala, is a large, flat portion of the bone that has four borders and three surfaces. It is vital to stretch the muscles responsible for holding the pelvis in a Posterior Tilt. (Do not squash your organs) Use deep breaths to help relax your muscles. ![]() Be careful not to apply too much pressure. There are 206 bones in the human skeleton: 80 axial skeletal bones (e.g., skull, vertebral column and sacrum) and 120 appendicular skeletal bones (e.g.There are three bones of the pelvis: the hip bone, sacrum and coccyx. Gently circulate your body weight on top of the ball.Bone is the basic unit of the skeletal system and provides shape and support for the body, as well as protection for some organs.
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