Thanks Mrd D, for our old link,

There is one area of safety that i am not sure of, as magnets being safe to use.
This is people that have had metal screws or plates surgical placed on whatever place of the body, good quality stainless steel should not attract to a magnetic force, or good quality alluminum should not attract either, i am not sure what types of metal the ortho's use, i would guess they wouldn't use anything with any steel, but i am not sure and i would think that this is a question that surgeon could answer properly.

Brian