While filming new action movie Olympus Has Fallen, Gerard Butler broke two bones in his neck without even knowing it. The actor performed most of the stunts in the film and recently admitted the project was very difficult on his body.

He told Jay Leno, "I was hit with a bullet casing in the eye, I ripped off a fingernail, banged up my knee... I used to sing, well that's debatable, but I lost my high notes and I went to the doctor and he said I had a serrated voice box... That was about a year ago. So I went back about a month ago and he looked down again and he said, 'You got a growth in your neck, you better go for an MRI (Magnetic Resonance Imaging) just in case.'
"So I go for an MRI and the woman comes out and says, 'Did you break a bone in your neck? You've got a bone sticking out of your neck.' I'm like, 'What?' So she says, 'You better go for a second opinion.' And so I go for another MRI and the doctor said, 'Did you break two bones in your neck?' I'm like, 'What?'
"So I broke my hyoid and my thyroid, they're just tiny, but one's sticking out. It doesn't bother me. He (the doctor) said, 'What have you been doing in the last year?', and I said, 'Well I made a movie called Olympus Has Fallen, where I pretty much got the f**king s**t kicked out of me.'"

In the film, the President is kidnapped by a terrorist who seizes control of the White House, and disgraced former Presidential guard Mike Banning is trapped within the building. As the national security team rushes to respond, they must rely on Banning's insider knowledge to save the President and prevent an even greater catastrophe.