Understanding Ankle Anatomy
The ankle joint is a flexible, free-moving joint made up of three bones: the tibia, the fibula, and the talus. The ankle joint allows the foot to point up (dorsiflex), point down (plantarflex), and move side-to-side (pronate/supinate).
Full function of the ankle joint depends on the successful coordination of many interrelated parts including bones, cartilage, muscles, ligaments, tendons, synovial fluids, and nerves.
Cartilage is the specialized smooth-gliding, shock-absorbing joint tissue that covers bones and allows them to move in relationship to each other with ease.
Ligaments are strong bands of tissue that connect bones to each other. These are located on each side of the ankle joint to create stability.