A bone of the leg is composed of four main bones: the femur, TIBIA, FIBULA, and SHIN. The femur is the longest and strongest bone in the body, located between the hip and knee joints. The TIBIA is the second longest bone in the body, located between the knee and ankle joints. The FIBULA is a thin bone located on the outer side of the TIBIA. The SHIN is the lower part of the leg, located between the knee and ankle joints. The STIRRUP is a small bone located at the bottom of the TIBIA, connecting it to the foot.