Ten-year-old Alicia Guerrero, who lost a leg in a lawn mower accident, has now become an active swimmer, thanks to an innovative and inexpensive swim-leg prosthesis developed by Larry Jensen of Yakima Orthotics & Prosthetics in Washington state. The leg is made of polypropylene and copolymer, materials more commonly used for leg braces. Its fin has a permanent angle, with a tread attached to the base so Alicia can walk on slippery surfaces.

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