Ramble ~ Wow had no idea about your sinal problem and upcoming surgery.
I've gone thru a bit of that myself a little over 10 yrs ago and more recently my wife had to have spinal surgery.
Good news is that hers, being more recent was way better.
The technology, less invasive techniques and medicine in general have come a long way in 10+ yrs.
Ask em to play some Zeppelin in the OR for ya!
I wish you only the absolute best and a speedy recovery!!!