Customized socket designs for prosthetics based on MRI scans of a patient's limbs loaded onto a multilayer, 3D computer can make life a lot less painful for amputees, where good fit is essential for function and comfort, according to this piece. Such is the work being done by David Sengeh, a doctoral student in the Biomechatronics Group at Massachusetts Institute of Technology. He was inspired by the violence he witnessed in his childhood in Sierra Leone, where warring factions' atrocities included hacking off people's limbs. "Seeing people who had lost their limbs and whose lives were just kind of cut short was very, very traumatizing. But it also opened this desire to engineer a solution," Sengeh said.