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From the July 30, 2007 edition Health Care A powered prosthetic mimics calf muscle’s movement By Marion Davis, PBN Managing Editor The most striking thing about the demonstration was how ordinary the two men looked. Pacing across the stage – first slowly, then fast – they walked naturally, with a slight bounce in their step, the way young, healthy people with strong, healthy legs would do. More » This item is available in full to subscribers. Please log in to continue. To purchase a copy of this article for $2.00, click here.