My first one was given to me in an offhand gesture by my sister , i'd been in hospital for the best part of a year and she said i hope you don't end up like grandad , he should have had a hip replacement in his 40's and he died at 76 without ever having the op , his shoe was built up at least 4 inches and he wore 4 copper bracelets ankles and wrists . I didn't give it much thought until it broke and i threw it in the bin . The following day i emptied 4 bin liners of rubbish out and routed through it until i found the 2 half's and put them on my ankle so they could be held with my sock . That's how i know they work .
And Clive i discussed this with my Surgeon , he is the best in his field , a young looking 50 maybe and never had a broken bone in his life , he wears them now .