I have to agree with Ellie May. I don't want to say that your Vet doesn't have the correct answers for you, but it sounds more like an LP case
Either way, I would consult with a Board Cert. Ortho Specialist. I think that is the 'only' way to get a more solid and experienced answers.
General Vets are great, but they can't possibly know everything and that's ok, that's when you need to seek the advice of someone that specializes in certain fields.
Keep us posted!
P.S. Sorry I missed this thread when you first posted