The British hunk, who plays vampire Edward Cullen in the hit film franchise, felt a sharp pain in his backside as he launched into attack mode and he had to call in a physiotherapist to ensure he hadn't suffered a serious injury.
He tells Eonline.com, ""I was shooting the last fight scene and I almost ripped my glute in the first shot I ever did. I was so nervous. I had to have a physio called in and have my butt cheek massaged for the rest of day. Very, very professional.""