Flexibility: pectoral girdle is more flexible-less ligaments,
ball and socket joint is shallower
Security: pelvic girdle is more secure, deeper socket. there are
more dislocated shoulders than dislocated hips
ability to bear weight: pelvic girdle can bear more weight-the
pelvic girdle has bones that are fused (os coxa) and a joint with
the sacrum. the pectoral girdle has a little bone called the
clavicle connecting it to the body wall.