The term FOOT-TO-LEG JOINT is an anatomical term for the ANKLE joint, which is a complex joint connecting the foot and the leg. The ANKLE joint is composed of three bones: the tibia, fibula, and talus, and is held together by ligaments and tendons. It allows for movement in the foot and ANKLE, including flexion, extension, and rotation. The ANKLE joint is essential for walking, running, and other activities that require balance and stability.