"This is really, on the edge sort of stuff," explains Dr. Robert Fox Spars, who worked on developing the procedure. "We're turning plastic surgery from something that people use in service of vanity, to a real tool for improving workplace efficiency."

The procedure involved making a small incision into both thumbs and shaving down the bones, followed by careful muscular alteration and modification of the fingernails. While Martel's new thumbs now appear small and effeminate in comparison to his otherwise very large hands, he says he can still lift "pretty much anything I could lift before the surgery - though opening spaghetti sauce jars has been a problem. That was a big surprise."