Lindsey Vonn was airlifted off the piste

American skier Lindsey Vonn crashed in the women's downhill competition at the Winter Olympics nine days after rupturing ligaments in her left knee.

The 41-year-old had successfully completed two training runs on the iconic Olimpia delle Tofane course in Cortina but crashed early in her run.

She was tended to for a lengthy period on the slope before being airlifted off the piste.

Vonn was taking a huge risk by competing on Sunday having suffered the ACL injury in Switzerland in the last World Cup race before the Games.