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Lateral ligament


Parts

Anterior talofibular ligament, posterior talofibular ligament, calcaneofibular ligament

Group

Lower limb joints - Ankle and foot

Description

This is the strong lateral ligament of the ankle. It is comprised of three strong ligamentous bands that attach the distal end of the fibula to the talus and calcaneus. The anterior talofibular ligament descends anteromedially across the ankle joint from the anterior border of the malleolus of the fibula to the anterior aspect of the talus. The posterior talofibular ligament attaches to the distal aspect of the fibular malleolar fossa and descends to attach to the lateral tubercle of the posterior process of the talus. The calcaneofibular ligament descends from the apex of the malleolus of the fibula to the lateral surface of the calcaneus.

Function

This strong ligament stabilizes the lateral side of the talocrural, or ankle, joint. It prevents excessive inversion of the ankle joint. Anterior parts of the ligament limit plantar flexion and posterior parts of the ligament limit dorsal flexion.

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