Elizabeth Kaufmann is a physical therapist and a former award-winning journalist in the health and fitness field. In addition to treating orthopedic patients for seventeen years, she has watched close family members go through eight knee, hip, and shoulder replacements. She lives with her husband, writer Ernest Tucker, in Colorado. Jared Foran, MD, is a board-certified orthopedic surgeon specializing in arthritic disorders of the hip and knee. He is currently the director of joint replacements at OrthoColorado and St. Anthony Hospital in Lakewood, Colorado.