Lindsey Vonn was heli-evaced off the World Championship Super-G course in Schladming, Austria, with a knee injury Tuesday morning.

After four hours of course delay due to fog and inclement weather Vonn landed a jump badly on her right knee, lost her skis, and slid down the course before hitting a gate. She was attended on course for 12 minutes before being airlifted out.

According to U.S. Ski Team Medical Director Kyle Wilkens, Vonn suffered a torn ACL and MCL in her right knee and a lateral tibial plateau fracture. She will be out for the remainder of this season but is expected to return to racing for the 2013-14 World Cup season and the 2014 Olympic Winter Games in Sochi.

Vonn has a history of coming back strong from injury—she was hurt going in to both the 2006 and 2010 Olympics—but with the Sochi games exactly a year away, recovering from knee surgery could seriously hamper her racing career.

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