Lindsey Vonn of the U.S. Alpine Ski Team takes the first run to set the pace on the EpicMix Racing Course at Golden Peak, Nov. 8, 2013 in Vail, Colo.

Lindsey Vonn, America's most decorated female skier, sustained injuries during a training run this morning, 10 months since undergoing knee surgery and just three months before she's expected to defend her title at the Olympic Games in Sochi, Russia.

The extent of her injuries was not immediately known, according to statement by the US Ski Team. Nor was it known whether she injured the same knee she blew out in February during the world championship in Schladming, Austria.

"Lindsey… was not admitted to the hospital and is currently being evaluated by Dr. Sterett back in Vail. We expect to have clarity on the situation in the next 24 hours," her spokesman Lewis Kay said in a statement.

THE ONE THING VONN DOES BETTER THAN TIGER WOODS

"Lindsey did crash in downhill training today at the U.S. Ski Team Speed Center in Copper Mountain [, Colo.] She is being evaluated," said team spokesman Tom Kelly in an email to ABC News.

Vonn tore her left knee's ACL and MCL ligaments in February's crash. She has been training for next week's Word Cup competition in Beaver Creek, Colo and the Winter Olympics in February.