Amy Brown, from Ashford, UK, who was born with half of one arm missing, said she used to hide herself before she raised £10k for a 3D printed bionic arm. The Hero Arm, produced by Bristol-based Open Bionics, has been a game-changer for her. Now she can grip things and even do a thumbs up, which took her "about four weeks" to learn, and she can hold her sons' hands as they cross the road to go to the park. Learning to use the Hero Arm, which uses a motor controlled by the user's muscles, takes time. "Being able to hold both my boys' hands as we cross the road, to take them to the park without having to rely on anybody else, is just amazing," she said. The Hero Arm can be used by adults and by children older than eight.

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