For five years, DU alum Gary Doan (BS ’19, MS ’21) has helped doctors fine-tune surgeries with the use of robotics. As a systems engineer for DePuy Synthes in Boston, Doan designs updates for the Velys Robotic-Assisted Solution, a robotic arm used by surgeons to position implants during knee replacements. It’s a product Doan understands well: In his last year at DU, DePuy Synthes approached graduate students to assess the arm’s accuracy, and he spent months studying it.