Best wishes for the injections to work.
I had total knee replacement two years ago and I'm still in pain because some of the nerves cut during surgery have not regenerated. This not something any surgeon can forsee. I had a second opinion from a very well respected orthopedic surgeon (but then, so was the one who performed the surgery) and the answer is always the same: "Sometimes the nerves regenerate quickly, sometimes they don't regenerate at all; it all depends on the individual."
Before the surgery I took Celebrex and Vioxx.
Whatever you do, I hope you can get rid of the pain. I know only too well how badly arthritis can make you feel.