The term 'concerning the ankle' can be summarized by the word 'tarsal, ' which is a six-letter word. Tarsal refers to the bones of the ankle joint, which are collectively known as the tarsus. The tarsus is composed of seven bones, which form the ankle joint and provide stability and flexibility to the foot. Additionally, the tarsal bones are connected to the lower leg bones, the fibula and tibia, by ligaments and muscles. Together, these bones and ligaments form the ankle joint, which allows for movement of the foot.