yes, it helped me. I had friends who did not listen to the dr and were out playing tennis the day they had the stem cells injected in the knee. Did not work for them. Nice thing is the recovery. No pain pills and lay around for 10 days. I had mri done and took that t the dr. He said i was a candidate. I did not want the experience i had with the tkr. 5 years later i still have pain and now dr thinks it may be fractured and wants to do it again.