Bones of the Foot

4. Navicular

Between the talus and cuneiforms sits the navicular bone, named for its curved, boat-like shape. It lies on the medial side of the foot and forms a joint with the talus, cuneiform bones, and cuboid. The only muscle that connects to the navicular bone is the tibialis posterior, the primary stabilizing muscle of the lower leg. Some individuals develop an accessory navicular bone, a growth that is typically asymptomatic, though large or fused accessory bones may require surgical removal.