Openprosthetics.org--Using open collaboration to help us overcome the multiple market failure that has stagnated innovation in prosthetic arms for more than a century. How open architecture, open hardware, and open source software can help lower the marginal cost of innovation and secure a culture of improvement for orphan medical device communities. Kuniholm is an engineer and founder of The Open Prosthetics Project, a non-profit organization that posts its research on prosthetic hardware designs on the internet, allowing individuals and companies to access the information free-of-charge. A Marine officer, he was sent to Iraq in 2004. On New Year’s Day in 2005, Kuniholm's patrol was ambushed by Iraqi insurgents near the Euphrates River. The Iraqi insurgents detonated a device packed with shrapnel and explosives, then started firing; Kuniholm's platoon took cover and returned fire. Kuniholm was wounded in the initial explosion and his right arm was later amputated below the elbow. In thespirit of ideas worth spreading, TED has created a program called TEDx. TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. Our event is called TEDxChapelHill, where x = independently organized TED event. At our TEDxChapelHill event, TEDTalks video and live speakers will combine to spark deep discussion and connection in a small group. The TED Conference provides general guidance for the TEDx program, but individual TEDx events