After working repeatedly with security shoes on, my husband developed a painful bunion on one foot. He went to a podologue (french term which translates apparently as "chiropodist" ), who treated the condition by moulding some kind of soft plastic (?) in the space between first and second toe. This device, once hardened, had to be worn for a couple of weeks. And the bunion was healed: it was completely reversed after some time. I should add, that this was done in the very early stages of the bunion - I have no idea if this would work with an old and kind of settled in bunion.