Aww, really hope your arm will be better real soon! *Gentle hug*
You don't need to worry about breaking bones being caused by diabetes. Some people just break bones easier than others, or sometimes you don't even need to land hard to break something, it's a lot about how you land or hit something.
I broke the scaphoid bone in my hand nearly 4 years ago, that's the first and only time i've broken any bones this far. And the scaphoid bone is generally quite difficult to break due to its placement... Ended up wearing a plastercast for over 10 weeks. What i did? Got mad and hit a wooden door soft enough to get my hand through

I've hit concrete walls before and nothing happened

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Type1 since october 2004.
Silver Animas 2020 (but on pump break)
MDI: Novorapid and Levemir with Novopen4
Mainly testing with: OneTouch UltraSmart called "The Vampire" and a Freestyle LITE called Buffy
hbA1c feb 2009: 5.1