Low-cost 3D-printed prosthetics, such as the e-Nable open-source prosthetic hand, are doing wonderful things for amputees. Over time, more groups are attempting their own designs, advancing the technology while keeping costs low.

Open Bionics from Bristol, England, and its Dextrus design, originally funded on Indiegogo, is so streamlined it has just won the James Dyson Award in the UK, putting it in the international final for the student design competition.

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