Sory to hear that, man. I hope it heals up well.
In my (relatively short) bocking experience, I've fallen more than enough in all my fails&bails even trying simple stuff like getting a forward bounce going.
But in all my F&B's I've come to appreciate my safety gear, esp. the double splinted wristguards
But then... that was on the Skyrunners I bought last year, so was it down to my ineptitude or the bad quality of those bocks? Probably a combo of both
But on my Exo's - so far - I haven't, so let's knock on wood and hope it stays that way.
Cheers and all the best with your arm!