We’ve been hearing a lot about prosthetics design in the last week. Here’s a new spin on the field – open source design and development. Iraq war veteran Jonathan Kuniholm lost a limb to an IED, and was fitted with the standard issue replacement. Meanwhile, his engineering colleagues were working hard to develop a more advanced model. In a spirit of great altruism, they realised that the best thing they could do would be to share the designs with the rest of the world so that more people could benefit from them, and the Open Prosthetics Project was born.