Final answer:
The bone involved at the ankle and the knee is the tibia. The tibia is a large bone of the leg located directly below the knee and it transmits the weight of the body from the femur to the foot.
Step-by-step explanation:
The bone involved at the ankle and the knee is the tibia. The tibia, or shinbone, is a large bone of the leg located directly below the knee. It articulates with the femur at its proximal end and the tarsal bones at its distal end. It is responsible for transmitting the weight of the body from the femur to the foot.