I had the shots to see if I was a candidate for RFA and it didn't work. Those weren't the nerves causing the pain.I'll try to remember, since it's been a once a year treatment for me so far it will take several years to really have the necessary data to give a meaningful report. I would suggest by asking your doctor if he/she thinks it's a good option for you. It's not for everyone. Also if you do decide to try it, if the insurance requirements are the same for you as they were for me they'll make you go thru a test first. The test basically consists of loading up the problem areas with novacain, if that gives you 80% or better relief then you passed the test and can get the procedure done. If it's less then 80 relief I guess the insurance companies feel it isn't worth it but that's just a guess.