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This Robotic Leg Is Controlled Only By Thought

Nerve signals sent to this man's missing leg are rerouted and now control a bionic leg instead.

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This man is the first person with a missing lower leg to control a robotic replacement with just his mind.

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Surgeons rewired his nerves so that signals went to his healthy hamstring muscle rather than trying to get to his damaged ankle. Sensors on his hamstring then detected those tiny electric signals and turned them into movements of the robotic leg.