Sounds like you have a soft tissue injury... could even be Myofascial Pain Syndrome which is what I have.
Did your doctor do Basal Branch Nerve Blocks before the RFAs? To my best knowledge they should have done 2 series of them a month apart and then decided at the end of the 2nd month if the RFA was the next logical step based upon the effectiveness of the 2 BBNBs. That's how my doctor explained it to me, but at least 2 other people have mentioned their doctor doing RFAs [B]despite[/B] the fact they didn't get any benefit from their BBNB's.
If you didn't get any relief from the BBNB's or your doctor didn't perform them at all as a precursor test, I would suggest shopping for a new pain management specialist. RFA's are time consuming and costly. I suspect that the doctors who did RFA's despite test results that contraindicated the procedure did them simply for the money.
The more I think about your post, the more I get the feeling your PM is tossing darts at a diagnosis board... Personally, I would start looking for a different PM.