PHOTO: AFP/EAST NEWS US Ski team head doctor Bill Sterett gestures as he answers questions on Lyndsay Vonn shin during a press conference at Whistler Media center on February 10, 2010. US ski star Lindsey Vonn has a badly bruised and possibly fractured right shin that is causing "excruciating pain" and may force her out of the Winter Olympics, she revealed on February 10. AFP PHOTO / OLIVIER MORIN