Patients have come to Dennis M. Lox, M.D. centers searching for a surgical and knee replacement alternative. Dennis M. Lox, M.D. centers provide leading-edge regenerative medicine options such as Platelet Rich Plasma (PRP) and Stem Cell Therapy as a means of avoiding surgery and preserving future options. While many have called it their “first resort” as an alternative to knee surgery, it has ended up being a “last resort” because it has been the only treatment they have needed.