lateral talocalcaneal ligament lateral talocalcaneal ligament the lateral talocalcaneal ligament (external calcaneo-astragaloid ligament) is a ligament in the ankle. it is a short, strong fasciculus, passing from the lateral surface of the talus, immediately beneath its fibular facet to the lateral surface of the calcaneus. lateral talocalcaneal ligamentcapsule of left talocrura articulation (distended). lateral aspecttalocalcaneal and talocalcaneonavicular articulations exposed from above by removing the talusdetailsfromtalustocalcaneusidentifierslatinligamentum talocalcaneum lateraleta98a03.6.10.102ta21925fma44284anatomical terminology it is placed in front of, but on a deeper plane than, the calcaneofibular ligament, with the fibers of which it is parallel.