Hi
I was scheduled for TKR when Corona hit and all was cancelled. I need to have both knees replaced. Now that wont happen until next year. My Ortho is very knowledgeable re CRPS and so is the anesthesiologist. The plan was, and protocol dictates, to use ketamine as part of the anesthetic during the surgery. After the surgery they place a nerve block that should last for 2 to 3 days. Then some kind of oral pain pills are used (depends on surgeon). I agree with the prior suggestion re vit C and talking with anesthesiologist prior.
I have done injections in the past to delay TKR but when the mechanical problems start to build the injections are less effective. My Ortho put it to me like this, "maybe your knee is acting as a pain generator for the crps" It is a big surgery and there are certainly no guarantees with CRPS. All you can really do is follow the protocols and hope for the best outcome. I hope it will bring you relief of your pain.
Barb