While I do not know for sure whether I have the SA version of RA, I had lidocaine tests done that indicated I had RA not to mention I had a Radio Freq Neurotomy done on one side of my back (the other side to be done in 3 weeks) and it is helping a lot to relieve the pain and inflamed feeling that starts where the lower back meets the buttocks and goes down the upper part of the leg, and sitting feels like "Hell" literally (walking can be heaven); so of the types of RA, that seems to be the closest to my symptoms.
Everyone responds differently, but generally with me Ive found steriodal anti inflamatories bring the most relief (corti shots, presndone - though the latter seems to wear off too quick), followed by nueropathic opioids (by this I mean Nycynta/Tapentadol first choice and and Ultram/Tramadol second choice as its noticably weaker), followed by NSAIDs, followed by weak opioids (codeine, hydrocodone), followed by Tylenol. Personally, I don't feel codeine is a good pain reliever for something as severe as RA disorders, unless the symtoms are only mild to moderate.
For Moderate to severe pain, it will barely take the edge off of the pain. As for Nuerotin, I have never been on it so I can't honestly say. The medication I take Nucynta would be a more suitiable opioid than codeine for pain related to SA/RA because its has two mechanisms of action, the traditional morphian receptor activation, and norephedrine reuptake inhibitor action. NE action very useful to some individuals with inflamed nerves (as it is thought to have a blocking action on nerve pain) and therefore by reducing the preceived pain helps the opioid side of nucynta work better. Thats what's worked for me, but EVERYONE is different.
MRI revealed a bulging disc w/gel lost at L5 and showed the bulge touching nerves, causing sciatica. Diagnosed w/ Arthritis which is responsible for joint inflamation pain. Treatment: Nucynta 50-150 mgs every 6 hours (schedule II narcotic, Mu Opoid agonist and NE reuptake inhibitor), Celebrex 100 mgs, Klonopin .5, Epidurals, Radio Freq nuerotomy (sept 8th, 2010)