Chris Duncan is CEO and a director of Vital Simulations (VitalSims; Edina, Minnesota), a company that develops and distributes web and iPad-based interactive simulation titles using virtual scenarios to improve learning outcomes. Chris has more than 25 years in start-up and business management experience including serving as CEO of QuickStep Games, a developer of active play video games; managing partner of Ice Studios, a new media video production house; and former president of Dexxon Capital Corp., a business finance company.

CLEVELAND — Knee implants can be a tricky thing. On one hand, even though they can be done successfully – patients sometimes have significant concerns of how the implant feels. Last week, David Dvorak, Zimmer's (Warsaw, Indiana) CEO spoke to a crowded room at Cleveland Clinic's 2012 Medical Innovation Summit about this topic and several others during one of the final CEO one-on-ones of the conference.