During standing, walking, and running, the foot and ankle provide support, shock absorption, balance, and several other functions that are essential for motion.
The ankle joint is formed by the distal tibia and fibula, and the superior talus.
Two ligamentous complexes join the bones that form the ankle : the ligaments of the tibiofibular syndesmosis and the lateral and medial collateral ligaments. The anterior talofibular ligament is the main stabilizer on the lateral aspect of the ankle, limiting the anterior translation and internal rotation of the talus.
