Oscar Pistorius shocked the athletics world this week when he qualified for the Olympic Games - but should he be allowed to race against his able-bodied rivals?
The South African double amputee, who competes on carbon fibre legs, has been included in the South African 4 x 400- metre relay team for the 2012 London Games, and his participation has raised new controversy over the advantage synthetic limbs produce on the track.
Pistorius' Olympic dream took a big hit when he finished .22 seconds over the 400m Olympic qualifying time of 45.30 seconds, but he was consoled today by being named in the relay team.
The 25-year-old sprinter was born without fibulas, which are the long bones on the outside of the legs. His parents were forced to make a difficult choice and opted for surgery to amputate his lower limbs - allowing him the best chance to learn to walk normally.
Pistorius not only learned to walk on prosthetic limbs within the first years of his life, but he ultimately became an elite athlete.
In 2007, the International Association of Athletics Federations asked Pistorius to undergo a series of tests. The news was bad. It was reported that his prosthetic limbs gave him a "bouncing" locomotion that required a lower metabolic cost than able-bodied runners. Consequently the IAAF banned him from able-bodied competitions.