IF you have hardware being put there.. the card will be forever as a tool if you set off detectors. I am a paralegal and go through the scanners all the time. I have yet to set any of them off from my back, but some of my shoes have set it off though. hehehe
The NO anti-inflammatories is they have good evidence that those prohibit fusion and have been linked to direct fusion FAILURE. So they dont want you using those early on in the fusion process, or none at all until fusion is complete.
I had some unusual circumstance of uncontrolled swelling and they put me back on Celebrex at week 10 I think (huh, i've forgotten already). But it was very early on and I am soldily fused at my one level fusion at l4/l5.
But if I had not HAD to be on the celebrex.. I would not have been.
So, I would make sure you follow your doctor's request without hesitation on this.
Take care. You will do great!!!
Tammy