1 — Anterior sacro-iliac ligament; 2 — Sacrum [sacral vertebrae I-V] ; 3 — Zygapophysial joint; 4 — Iliolumbar ligament; 5 — Lumbar vertebra [LV], costal process; 6 — Interosseous sacro-iliac ligament; 7 — Ilium; 8 — Sacro-iliac joint
1 — Anterior sacro-iliac ligament; 2 — Sacrum [sacral vertebrae I-V] ; 3 — Zygapophysial joint; 4 — Iliolumbar ligament; 5 — Lumbar vertebra [LV], costal process; 6 — Interosseous sacro-iliac ligament; 7 — Ilium; 8 — Sacro-iliac joint