1 — Lateral malleolus; 2 — Fibula; 3 — Tibia; 4 — Medial malleolus; 5 — Navicular; 6 — Talus; 7 — Calcaneus; 8 — Sustentaculum tali; Talar shelf; 9 — Plantar calcaneonavicular ligament; Spring ligament; 10 — Cuboid; 11 — Metatarsal [I]; 12 — Trochlea of talus, superior facet; 13 — Medial malleolar facet; 14 — Head of talus; 15 — Lateral malleolar facet; 16 — Lateral tubercle; 17 — Plantar aponeurosis; 18 — Long plantar ligament; 19 — Medial cuneiform; 20 — Navicular articular surface; 21 — Talocalcaneal interosseous ligament