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It comprises three articulations between talus and calcaneus 1:
- anterior: head of talus with anterior facet of the calcaneus; small articulation in size, just lateral to medial facet
- middle: the medial (sustentacular) facet of talus with the middle facet at the sustentaculum tali of the calcaneus
- posterior: posterior facet of the talus with posterior facet of the calcaneus; largest articulation in size
The anterior talocalcaneal articulation (anterior and middle facets) are often congruent and are part of a separate synovial cavity (talocalcaneonavicular joint) to the posterior talocalcaneal articulation.
The posterior talocalcaneal articulation (posterior facet) in isolation comprises the anatomical subtalar joint.