lol at you dumbasses who know nothing about MMA. Corey Hill cuts water weight to get down to 155, and yes he's too tall to fight at that weight class, but that has nothing to do bone density. UFC is regulated by athletic comissions and every state they hold events in. There are more deaths in NASCAR and Boxing than in MMA. Dumbasses.

From the looks of it, the guy who broke his leg (Corey Hill) lost a whole lot of weight to get into the same weight class as the other fighter. (Hill is 6'4” and got down to 155lb) That kind of weight loss, especially if it's rapid, can cause serious loss of bone density. UFC is unregulated, so I'm not surprised something like this has happened.

its ultimate fighting championship, not club.