Siri, I read that you're a dancer... I know this is personal, but have you ever had an eating disorder? I have severe bone loss in my ankles and wrists because when I was a gymnast I stayed nice and healthy, but I grew 9 inches in 3 months one year and that ended my gymnastics career. I gained weight (I was 15 at the time) and figured I'd do something about it...so I became anorexic. I lost a long of bone stability with my eating disorder. If you've had that problem ever, then it could be due to that.
The other thing I like to equate weird bone fractures to is this... You know those dishes made by Corelle? They are touted as "shatter and break resistant". I happen to know that they are resistant to breaking, but not on my tile floor! If you drop one of those plates in just the right spot...shatter...all over the kitchen! Might be that you just hit your arm *in the right spot*.
It's most likely not diabetes related.
