Teenager rides a bike for the first time after being given a bionic hand

A British teenager born with only one hand is learning to ride a bike after being fitted with the world's first medically-certified 3D-printed bionic hand. Fourteen-year-old Aimee Ashton, a talented art student from Hull, was born with part of her arm missing and no left hand. Aimee had previously used prosthetic arms but stopped using them because'they didn't do anything' and weren't responsive to movement. But she has since been fitted with the'Hero Arm', developed by Bristol-based company Open Bionics, which costs around £10,000. The battery-powered arm picks up signals from muscles allowing the user to do tasks with both hands.