Blog » 3D-printed exoskeleton helps young girl use her arms 5th August 2012 US company Stratasys has released a video and case study demonstrating how its technology helped 4-year old Emma Lavelle to overcome the limitations of a rare congenital disorder, allowing her to use her arms for the first time. Using a 3D printer, researchers were able to create what little Emma calls her "magic arms." The device is a custom-designed robotic exoskeleton that enables her to conquer greatly limited joint mobility and underdeveloped muscles. Comments »