The anterior talar articular surface is small and articulates with the corresponding anterior facet on the head of the talus.
The posterior talar articular surface is large and is approximately near the middle of the superior surface of the calcaneus.
Between the posterior talar articular surface, which articulates with the body of the talus, and the other two articular surfaces, which articulate with the head of the talus, is a deep groove (the calcaneal sulcus; Fig. 6.98A,C).