For Mike Watkins a blister on his foot led to part of his leg being amputated in July of 1998. He's been through several sets of artificial limbs but likes his latest one the best. It's lighter and provides more movement.
Watkins and many other amputees are benefiting from newer technology and newer materials.
An example of how far the technology can go could be seen this past weekend as South African Olympian Oscar Pistorius made history in the London games as being the first para-Olympian to compete in the regular Olympic games.
Pistorius had both legs amputated when he was eleven months old.
Pistorius finished last in the 400 meter semi finals Sunday, but has one more shot at a medal when he competes for South Africa in the 4X400 meter relay this Thursday.