The calf, ankle, and foot are controlled largely by a series of muscles and ~tendons~ that function as a single biomechanical unit. These muscles work together to lift or lower the heel for virtually any activity that involves locomotion. All of the parts of the lower leg are interconnected. For example, when you stand on your toes, you can feel the muscles in the back of your calf doing most of the work. Because of its structure, and because it absorbs the impact from activities like running and jumping, the lower leg is subject to more |exercise|-related injuries than any other area of the body. These problems range from bunions and blisters to stress |fractures| and ankle |sprains|, the most common sports injury of all.
