Depp having to rely on stunt double

Johnny Depp injured his back shooting 'The Lone Ranger'.

The 49-year-old actor was left writhing in pain on two occasions during action scenes for the Western film - in which he plays Native American Tonto opposite Armie Hammer, who portrays the title character - and he has now realised he can't do many of his own stunts and needs to rely more on a double.