1 — Femur; Thigh bone; 2 — Obturator artery, posterior branch; 3 — Synovial membrane; Synovial layer; 4 — Synovial sleeve around ligament; 5 — Head of femur; 6 — Obturator artery, acetabular branch; 7 — Artery of ligament of head; 8 — Ligament of head of femur; 9 — Obturator
artery, anterior branch