I did not go that route, however, I have talked to people who have had it. I know 3 people who did have this procedure and for 2 of them, it worked well for a while. One of them has had it re done and the 2nd went for the fusion. My PM Dr. had told me about it and said he thought that if my blocks weren't helping (which they didnt), he'd recommend the procedure before fusion. My Ortho. said it works 50/50 and it is usually just a temporary fix. He said if I thought I could live with my pain level for a while and wanted the procedure until I was ready for a fusion we could try it. But sooner or later I would still need the fusion.
So, those are the statements I have heard from others. Do your search using "radio Frequency" on the different back and spine websites. You should find a bunch of info.
Good luck and keep us posted.