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 despite
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.