posterior talocalcaneal ligament posterior talocalcaneal ligament the posterior talocalcaneal ligament (posterior calcaneo-astragaloid ligament) connects the lateral tubercle of the talus with the upper and medial part of the calcaneus; it is a short band, and its fibers radiate from their narrow attachment to the talus. posterior talocalcaneal ligamentligaments of the medial aspect of the foot.detailsfromtalustocalcaneusidentifierslatinligamentum talocalcaneum posteriusta98a03.6.10.104ta21927fma44291anatomical terminology