Hey, NanaZ,
If it's support you are looking for you have found the right Forum, just as I did a few short weeks ago. The people on here are wonderful.
They don't routinely do this procedure over here, but I do know the daily draining of the Spirit caused by chronic, severe pain. I have also become a recent wheelchair user (not resigned or reduced to). It's no more than a tool, a small personal transport device which our condition deems necessary. It doesn't diminish us. Should you need one, remember this.
However, I trust this will not be the case as your procedure will bring you the relief from pain we all seek. Good luck, I will be thinking of you on the 30th.
Dave.