Motion
The joint allows inversion and eversion of the foot, but plays no role in dorsiflexion or plantarflexion of the foot.
It is considered a plane synovial joint, also commonly referred to as a condyloid joint.
The subtalar joint can also be considered a combination of the anatomic subtalar joint discussed above, and also the talocalcaneal part of the talocalcaneonavicular joint. This is the more common view of the subtalar joint when discussing its movement. When both of these articulations are accounted together, it allows for pronation and supination to occur.
Read more about this topic: Subtalar Joint
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