talocalcaneonavicular joint ta·lo·cal·ca·ne·o·na·vic·u·lar joint (tā'lō-kāl-kā'nē-ō-nə-vĭk'yə-lər)
n.
A ball-and-socket joint, part of the transverse tarsal joint, formed by the head of the talus articulating with the navicular bone and the anterior part of the calcaneus.