Originally Posted by DArthurBrown

My wife is a nurse in a neurological unit. They see the minority of head injuries that require additional care beyond an emergency room visit. My wife says that about once a month, they get someone that slipped off a skateboard or fell off a bicycle, usually while doing something like going over a curb at low speed. It takes amazingly little inertia to hurt your head badly. A bike helmet will completely prevent those types of injuries.