India, Oct. 2 -- V eteran actor Amitabh Bachchan recently suffered a knee injury after slipping and falling while shooting. The 83-year-old actor revealed the incident during the latest episode of his show Kaun Banega Crorepati 18, explaining why he was delivering his opening monologue while seated instead of standing as he usually does. "Usually, I do my monologue standing at the centre, but today, I have a knee injury. Yesterday, during the shoot, I slipped and fell with a loud thud and injured my knee," he said, pointing to his left knee. He added, "It's torn. So I had trouble standing up. I thought I'd talk while sitting and then play with you standing up later. Don't worry." HTC...