[OutOfHere]

> it's pretty clear what caused what.

It really isn't. Maybe your arm was osteoporotic or weak from a prior incident, and it broke due to a trivial pressure injury when the ambulance workers were loading you into the ambulance.

The point is that it's pretty clear only when it can be mathematically proven, and at all other times it's based on some idea of probability. In the case of this article, a causal association seems quite probable to me.