Warning: If you are squeamish, do not look
This happened last night at the UFC Fights For The Troops event. There was a lot of carnage that night, and a surprisingly large amount of injuries for UFC card, but Corey Hill's gnarly leg breakage is by far the worst of the night. MMA is usually a generally safe sport, and this was a freak accident. Corey Hill threw a leg kick, it was checked, and his leg broke in the most gnarly fashion I have ever seen. After it broke, he fell back, and his leg was literally flapping like a rubberband. It's the most serious injury in the UFC's history by far. It's also completely real. If you dont believe me, go to UFC.com's front page and watch the fight. Amazingly, Hill is okay today. They did an operation, and he's fine. He'll be out for 12-18 months though. 
417alum
that musta hurt like a *****