Wow, P, that's too bad! Coincidentally, I just heard a call in radio show about osteoprosis yesterday and was going to update this thread by mentioning how Vit D is good for that too. I hope you can find some treatments that help you.
Incidentally there was alot of talk about Forteo on this call-in-- apaprently there was a study a while back that said it can cause a jaw bone to "die" and people were very scared to use it for a while there... Anyhoo, the specialist on this program said that the risk of this was very minimal and that the benefits of Forteo hugely hugely outweighs the small risk. So if that was a concern of yours, be at ease. They pushed this website on this show, you might find it useful.
Osteoporosis Canada - Education and Support for the Risk-reduction and Treatment of Osteoporosis