That's the amazing Oscar Pistorius. If you don't know who he is you should check him out.
"The Blade Runner" as he is often called, was born without the fibula, the long, slender bone running along the outside of the leg from below the knee-joint and down to the ankle.
In both legs.
His parents consulted with some of the leading doctors in the world before making the heart-wrenching decision to have his legs amputated below the knee by South African orthopaedic surgeon Dr Gerry Versveld.
They were advised by doctors that having the amputation done before Oscar had learned to walk would be less traumatic for him and would greatly improve his chances of mobility later in life. Six months later he received his first pair of prosthetic legs and within days he had mastered them.
Read the rest of his amazing story here...