I am not new here, but I haven't been around in awhile...

I have bilateral SI degeneration( from a fusion surgery, I think). I had a pretty successful RF procedure on the left, and am waiting on the right. I had about 80% pain relief, so I'd say it went very well! I also have Thoracic spine issues and used it up there, and it was great for almost a year! This, however is not going to last as long, I can already tell.
I was quite shocked at how bad the pain was after the procedure. It stopped after a week, though, and has been gone since...about 3 months.
Good Luck to you, and this is a great place to get ideas!