The bones of the hindfoot are the talus and calcaneus.  Anteriorly these bones articulate respectively with the navicular and cuboid bones of the midfoot at the transverse tarsal joint.  This joint is also known as Chopart’s joint.  The calcaneus is the largest bone in the foot and articulates with the talus above.  It is the main weight bearing structure of the foot and makes up the posterior point of the weight bearing “tripod”.  The Achilles tendon inserts on the posterior process of the calcaneus and is responsible for the majority of dorsiflexion strength needed for the push-off phase of ambulation.  The talus articulates with the calcaneus below and the ankle mortise above.  This dense bone is responsible for ankle motion in ambulation.  

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