A friend of mine died from a "bump". She was snowmobiling with family/friends and tried to get past a pickup truck that was blocking the trail head. The machine slid down to the truck, trapping her leg. I don't remember if it was enough to break the bone, but they'd gone to the emergency room to be sure, she was in quite a bit of pain.
She didn't live through the day. She died in the emergency room, not too long after complaining of a bad headache.
A blood clot formed in her leg as a result of the injury, and then moved to a more dangerous place.
Since 2009, hit-and-run fatalities are up 60 percent, the report finds, rising faster than overall traffic deaths. Hit-and-runs now account for a greater share of all traffic fatalities than at any time in the past 12 years. Only about half of hit-and-run drivers who kill are later identified.
The authors aren’t sure why fatal hit-and-runs are rising, but as with the general upward trend in traffic deaths, they suspect distracted driving is a factor.
Previous research has shown that hit-and-run drivers tend to have histories of drunk driving and license suspensions, and flee the scene to avoid steeper penalties.