Figure 1g. Articular facets of the subtalar joint. (a) On an axial MPR image obtained at the level of the talocalcaneal articulations, the posterior calcaneal facet (black arrow) is well depicted, but the middle (arrowhead) and anterior (curved white arrow) facets are not. There is a fracture at the medial end of the navicular bone (straight white arrow). (b-d) Coronal MPR images (b is the most posterior, d is the most anterior) show the posterior facet (arrow in b), middle facet (arrowhead in c), and anterior facet (curved arrow in d). The fracture at the medial end of the navicular bone is again noted (straight arrow in d). (e-g) Sagittal MPR images show the posterior facet (arrow in e), middle facet (arrowhead in f), and anterior facet (arrow in g).