A year after competitive skier Lindsey Vonn suffered severe injuries during a high-speed crash at the world championships last February, the gold medalist revealed that she will not be able to compete in the Sochi Olympics next month.

In an emotional Facebook message posted to her account on Tuesday, Lindsey said she is “devastated” to be missing the Olympics, “but the reality has sunk in that my knee is just too unstable to compete at this level.”

The most accomplished US ski racer in history, Lindsey underwent reconstructive knee surgery last year after she tore two ligaments in her right knee and broke a bone after crashing during a race.

Her announcement comes one month before the opening ceremony of this year’s games. According to her personal publicist, the 29-year-old will have knee surgery again “shortly.”

This is certainly not the first time that Lindsey was forced to withdraw from competition.

Midway through the 2011 world championships, she pulled out due to a concussion. She skipped a race in 2009 after slicing her thumb open and hurt her knee while training for the 2007 worlds. She also took a scary fall during the 2006 Olympic games.

“She'll be back," Vonn's father, Alan Kildow, said in a telephone interview with ABC. "You'll see a lot of Lindsey Vonn in the future."

Lindsey finished the 2010 Vancouver Games with a gold medal in downhill and a bronze in the super-G. She is also a four-time overall World Cup champion and is notably dating golf champ Tiger Woods.

"I did everything I possibly could to somehow get strong enough to overcome having no ACL," Vonn said in her message. “I will be cheering for all of the Olympians and especially team USA!”