Video: Lindsey Vonn injures knee, airlifted after World Championships crash

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SCHLADMING, Austria -- Olympic champion Lindsey Vonn of Vail crashed during the opening day super G competitions at the FIS Alpine Ski World Championships.

Vonn had posted the fastest first interval and was having a strong run when she went down. She was immediately attended to by race medical officials and transported by helicopter, as is standard protocol, to a nearby hospital.

The American suffered a "complex knee injury," according to the hospital where she was taken. Her injuries are not life-threatening, a hospital spokesman said. According to Denver-based journalist Kelley McMillan, who is covering the Championships for the New York Times, Vonn tore both her ACL and MCL and also suffered a lateral fracture on her tibial plateau.

She will be out for the rest of this season.

Vonn received medical treatment on the slope for 12 minutes before being airlifted to the hospital. The crash comes almost exactly a year from the 2014 Winter Olympics in Sochi, Russia.

That's not the only issue of bad timing with this crash. Vonn had just returned to competition last month after taking a break that lasted nearly a month to fully recover from an intestinal illness that landed her in the hospital for two days in November.