I have done the prp twice and also stem cell injections in my hip…..both very expensive….with no physical improvement after. All of my physician friends have said that there is no evidence that these procedures will work….and they did not on me. Also, after my last prp, i had extreme pain in my leg….the physician told me that i had spinal stenosis…that the pain was due to that….chalked it up to the hype surrounding prp….it was a lesson that was quite expensive and not helpful at all