If you follow the sport, hockey has life-impacting injuries that are every bit as violent as football.
Deadspin and SBNation are pretty good about detailing skate-inflicted injuries...and of course there's the Clint Malarchuk injury immortalized on YouTube...the Marian Hossa high stick that nearly cost Bryan Berard an eye and effectively derailed his careeer... and thanks to the Winter Classic in Pittsburgh a few years ago Sidney Crosby has become the poster child for the NHL's looming concussion problem which was overlooked as it destroyed Eric Lindros' career. The brain trauma going on in hockey is every bit as serious as that being reported with retired football players...you're only just beginning to hear about it in hockey (see Bob Probert's suicide as a case-in-point). If you want to talk about spinals, you may have heard about Travis Roy becoming paralyzed from contact with the boards on his first ever shift for Boston University.
That's just standard run-of-play related incidents that I came up with off the top of my head...it doesn't even begin to cover goon-related injuries like the one inflicted by Todd Bertuzzi (the reason I can't pull for the Red Wings) on Scott Moore all those years ago.