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A woman with a hand amputation wore the prosthetic for several hours, which enabled her to pick objects up
Hao Yang/University of Science and Technology of China
A lightweight prosthetic hand that can move almost as freely as a human hand can help wearers carry out intricate tasks, such as tying knots, combing hair and playing chess.
To replicate the dexterity of a human hand, most commercial prosthetics use electric motors or compressed air systems, which can make the system heavy and uncomfortable to wear for too long.
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