Which bone forms the ankle joint and sits above the calcaneus?

Which bone forms the ankle joint and sits above the calcaneus?

• A. Talus
• B. Navicular
• C. Cuboid
• D. Second or intermediate cuneiform

Answer: (A)

The bone that forms the ankle joint and sits above the calcaneus is the talus. It is the key link between the leg and the foot, with a superior articular surface that fits into the tibia and fibula to create the ankle mortise, allowing the leg to move the foot through dorsiflexion and plantarflexion. The talus also sits directly on top of the calcaneus, forming the subtalar joint beneath it. The other tarsal bones—navicular, cuboid, and the intermediate cuneiform—lie in the midfoot region and contribute to various other joints and the arches, but they do not form the ankle joint with the leg.

The bone that forms the ankle joint and sits above the calcaneus is the talus. It is the key link between the leg and the foot, with a superior articular surface that fits into the tibia and fibula to create the ankle mortise, allowing the leg to move the foot through dorsiflexion and plantarflexion. The talus also sits directly on top of the calcaneus, forming the subtalar joint beneath it. The other tarsal bones—navicular, cuboid, and the intermediate cuneiform—lie in the midfoot region and contribute to various other joints and the arches, but they do not form the ankle joint with the leg.