You've had so many problems with your bones. Seems like the doctors you're seeing would be a little more vigilant in their attempt to figure this out. The spinal cord is nothing to fool around with.

I'd start keeping copious notes on all the doctors I've seen and what they say. Maybe even keep a running file of copies of your medical records from each doctor.

I really hope you can get this straightened out soon. You've been in pain way too long.