Lindsey Vonn crashed during the super-G and has been taken by helicopter to a hospital from the world championships after apparently injuring her right knee.
Vonn, of the United States, lost balance on her right leg while landing after a jump. Her ski came off immediately, and she slid off course and hit a gate before coming to a standstill.
Vonn received medical treatment on the slope for 12 minutes before going to the hospital.
She trailed the race leader, Tina Maze of Slovenia, by 12-hundredths of a second shortly before the crash.
The race, which was postponed for three and a half hours because of fog, restarted after a 15-minute delay.
Just last week snowmobiler Caleb Moore died Thursday, a week after a crash that has raised new safety concerns about the X Games. He was 25 years old.
Moore, a freestyle snowmobiler, was attempting a backflip at the Winter X Games in Aspen, Colorado, when he couldn't rotate his machine enough to land properly. The skis dug into the lip of the slope, bringing the 450-pound snowmobile crashing down on him. The vehicle slammed into Moore's head and chest.