they do tend to happen less often in the arm

( Mykeyboy A massive, salty filing cabinet, Tue 2 Jun 2009, 21:51, archived)

I haven't heard of that before, but it does make sense
the impact/strain would have to be hefty
( Neon Blue Ah ha ha haa! I feel positively capital!, Tue 2 Jun 2009, 21:55, archived)