Page 42 - ASOP ROT Study Guide

This combination of three bones and three joints forms a ring which has a small degree of
flexibility. The flexibility or "give" helps the pelvic girdle to withstand stresses. It is interesting
that prior to childbirth changes occur in the body that increase this "give" in the pelvis.

3. THE HIP JOINT

The hip joint (illustrated below) is a synovial joint between the innominate bone of the pelvic girdle
and the proximal end of the femur. It is in the form of a "ball and socket". The socket is called
the acetabulum and the ball consists of the head of the femur.

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