Mr. Rheinstein is a board-certified prosthetist whose focus is restoring gait and grasp function in patients with limb loss. He specializes in complex upper and lower limb prosthetics and provides immediate postoperative care. He divides his time between providing care for people who need prosthetic devices and researching and testing new products. He also presents at academic conferences, teaches continuing education courses, publishes in textbooks and professional journals, and trains prosthetic residents.