part of part of Homo sapiens calcaneus surface groove calcaneal sulcus of calcaneus 2026-03-19T00:00:00Z A surface groove oriented obliquely on the superior surface of the calcaneus, running between the posterior and middle talar articular facets. Together with the corresponding sulcus tali of the talus it forms the tarsal sinus, which lodges the interosseous talocalcaneal ligament. David Osumi-Sutherland