Had it done in Toledo with Dr Kruse. PRP was done last year, stem cells about three years before that. No side effects, no pain, i would check Mayo Clinic and Regenexx websites for info. I have noticed Regenexx has on site people to talk with and they are all over the country . What i like is they publish their research and success and failures on various types of the body. Had a friend who visited Mayo and she said Mayo is recommending PRP first and then if needed, Stem cells. I had it done in reverse. Research being done everyday but do not get sucked into the bad actors who buy stem cells over the counter.