posterior tibiofibular ligament posterior tibiofibular ligament the posterior ligament of the lateral malleolus (posterior tibiofibular ligament, posterior inferior ligament) is smaller than the anterior ligament of the lateral malleolus and is disposed in a similar manner on the posterior surface of the syndesmosis. it connects the tibia and fibular on the inferior part of both bones. posterior tibiofibular ligamentthe ligaments of the foot from the lateral aspect. (post. lat. malleol. lig. labeled at center left.)lateral view of the human ankledetailsidentifierslatinligamentum tibiofibulare posterius, ligamentum malleoli lateralis posteriusta98a03.6.05.004ta21870fma76853anatomical terminology