The talus is a critical bone of the ankle joint. It connects the leg and the foot. The talus joins the ankle joint and is responsible for the upward and downward movement (dorsiflexion and plantarflexion) of the ankle. In addition, it joins the heel bone (the calcaneus) where it is responsible for the majority of the inward and outward movement (inversion and eversion) of the foot. Injuries of the talus can affect both the ankle and subtalar joint and affect multiple planes of movement of the foot and ankle.