Tarsal Bones

The foot consists of an ankle, an instep, and five toes. The ankle is composed of seven "tarsal bones," forming a group called the tarsus. These bones are arranged so that one of them, the "talus," can move freely where it joins the tibia and fibula (lower leg bones). This is known as the "head of the talus." The remaining tarsal bones are bound firmly together, forming a mass on which the talus rests. The other bones which compose the tarsus are the "calcaneus," the largest of the ankle bones; the "talus;" the "navicular," the "cuboid," the "lateral cuneiform," the "intermediate cuneiform," and the "medial cuneiform." The "calcaneus," or heel bone, is located below the talus where it projects backward to form the base of the heel. It helps to support the weight of the body and provides an attachment for muscles that move the foot.