Well, just to be the contrarian...
I have a 2 or 3 stainless steel screws in my left knee. I've had them for years and pretty much forget about them until I have to go through one of these things.
I set off the detectors regularly at the Justice Center when I have to use the public entrances, and I've set off the one at the Jail the few times I've had to go through it as well. A quick pass with the wand sorts it all out.
It really is just a matter of how sensitive the things are set, and when they were last calibrated.
The longer they go between calibrations the less sensitive they become, or so I've been told.
Good metal detectors will pick up stuff without any metal in them also.
The security guys at the JC have had to scold off-duty officers for bringing in their Glock branded combat-ware knives.
No metal in them, but they get spotted anyway.
So, YMMV indeed, but I'd take the paper work with me just to be safe.
Having said that of course I won't be taking mine when I go to Vegas next week, so... y'know...

:laugh: