http://www.merriam-webster.com/medical/hindfoot

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Note added at 9 mins (2014-04-04 09:09:45 GMT)
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What Bones and Joints Constitute the Hindfoot?

The hindfoot is formed by four bones:

the talus (ankle bone) that connects to the tibia and fibula in our lower leg to form the ankle,
the calcaneus (heel bone), the largest and strongest bone in the foot.
the cuboid that lies on the outer portion of the foot below the talus (ankle bone)
the navicular, a flat oval shaped bone lies below the cuboid bone.

There are three joints that make up the hindfoot. These three joints include the subtalar (talocalcaneal), talonavicular, and the calcaneocuboid.
http://biomimetics.com/HindfootAnatomy.htm