Been there, done that. Still taking two different pills daily to be able to bend knees and walk without severe pain.
I saw a Dr Steven Anderson in Pillager, MN, unfortunately he is no longer there. Dr Beachy at Staples Medical Center in Staples is the best one I know. Unfortunately he typically has a two year waiting list. Still may be worth the call, they may be able to point you to another reputable provider.
One of the worst things I have had in my life, even worse than my kidney cancer. Good Luck