posterior talofibular ligament posterior talofibular ligament the posterior talofibular ligament is a ligament that connects the fibula to the talus bone. it runs almost horizontally from the malleolar fossa of the lateral malleolus of the fibula to the lateral tubercle on the posterior surface of the talus. this insertion lies immediately lateral to the groove for the tendon of the flexor hallucis longus. posterior talofibular ligamentthe ligaments of the foot from the lateral aspect. (post. talofibular lig. labeled at center left.)lateral view of the human ankle. (posterior talofibular ligament labeled at bottom left.)detailsfromtalus bonetofibula (lateral malleolus)identifierslatinligamentum talofibulare posteriusta98a03.6.10.010ta21920fma44084anatomical terminology