Fig. 4.

Sagittal section of the ankle showing the most relevant anatomical structures. 1 Tibia. 2 Talus. 3 Neck of the talus. 4 Head of the talus. 5 Tibiotalar working area. 6 Posterior subtalar joint. 7 Talonavicular joint. 8 Capsule. 9 Intracapsular but extrasynovial fatty tissue. 10 Anterior tibial artery and vein painted with Adobe Photoshop (the deep peroneal nerve has not been identified). 11 Extensor hallucis longus. 12 Deep layer of inferior extensor retinaculum. 13 Superficial layer of inferior extensor retinaculum