I — Lesser trochanter; 2 — Sacrotuberous ligament; 3 — Gemellus inferior; Inferior gemellus; 4 — Obturator internus; 5 — Iliac crest; 6 — Anterior superior iliac spine; 7 — Gluteus medius; 8 — Piriformis; 9 — Gemellus superior; Superior gemellus; 10 — Quadratus femoris;
II — Intertrochanteric crest; 12 — Greater trochanter; 13 — Ischial spine; 14 — Sacrum [sacral vertebrae SI-SV]; 15 — Posterior gluteal line;
16 — Ilium, gluteal surface; 17 — Gluteal tuberosity