The shoulder is loose, but the pelvic girdle is built for strength and weight-bearing. Each hip bone is three bones fused into one, and it anchors the legs to the spine. Tap the parts. Then compare the male and female shapes.
Ilium
Hip boneilium + ischium + pubis
The three fused bones
📷 Reference image
A real labeled figure to compare with the interactive above.
The Pelvic Girdle — OpenStax, CC BY 3.0 (via Wikimedia Commons)
