By now, probably just about everyone has seen amazing footage of single- or double-amputee runners, using Össur's Flex-Run carbon fiber running blades. The springy substitutes for legs allow their users to run so fast and naturally, that there is currently a debate over whether or not it would be fair to allow athletes using them to compete against non-amputees. Carbon fiber isn't exactly known for its grippy qualities, however, so Nike has been working with one-legged triathlete Sarah Reinertsen, to create the equivalent of a shoe that could be used with the blades. The result is the Nike Sole.
Read the full article: Nike develops performance rubber sole for prosthetic running blades