Canadian lawyer John A. McKiggan, has written about concussions on his blog for many years and recently pointed out a great video that is really worth taking the time to watch:
http://www.youtube.com/watch?v=8WubaHoUN7o&feature=player_embedded
It is this kind of information that parents and athletes need to know about. We have done a poor job over the years in this protection. In the big picture, hopefully more education will contribute to the prevention of injury and the proper help and protection for those who weren't taken care of.