Surgical implants and airport metal detectors?

I'm looking for people living in different countries that have had any experience with airport metal detectors and metal implants. I have 2 rods in my back and would like to know what to expect if I decide to travel in the future. Some websites claim that you don't need a card/letter - just need to show them your scar (pretty obvious in my case). I thought all you needed was a letter from your GP stating that you have had a surgical procedure and where the implants are located. But would this be generally recognised in different countries? The last thing I want is to be hauled in for a cavity search lol.

Surgical implants and airport metal detectors?
My husband has had both knees replaced. He travels constantly, and just submits to a search over his clothing by an officer each and every time he goes through security. A male officer is called for men, and a female officer is called for women.





He doesn't even bother with a card or letter because they still need to search you. Anything that the metal detector finds must be searched, so if you hear beeping when you're going through the metal detector, the security officers need to find out why it's beeping. It doesn't take very long, and at least they are trying to keep weapons (and the bad guys) off the plane.
Reply:My partner has metal plates and screws in his hand and it was not detected when he whent through airport security.
Reply:I have total knee replacements...and they just use the hand wand when I tell them...and I can roll up my pant legs if needed to show them have no weapons and i do have the scars.

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