Posterior talocalcaneal ligament
Joints and ligaments · Latin: Ligamentum talocalcaneum posterius
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.
Definition from Wikipedia, CC BY-SA 4.0.