By ANDREW DAMPF
AP Sports Writer
SCHLADMING, Austria (AP) - All it took was a moment. Lindsey Vonn landed hard and tumbled face first with a piercing shriek.
Just like that, her season was done. The star American skier was on the ground with two ligaments in her right knee torn, a bone in her lower leg broken.
The cascading fall down the slope during the super-G at the world championships Tuesday knocked out the four-time World Cup champion for the rest of the season, the latest and most serious in a string of injuries for Vonn at skiing's biggest events.
The U.S. team said in a statement it expects her back for the next World Cup season and the 2014 Sochi Olympics, which start a year from this week.
The harrowing accident came after Vonn was lifted into the air off a jump in the opening race at the championships. As she hit the ground, her right leg gave way and she spun down face first, throwing an arm out to protect herself. She ended up on her back as she smashed through a gate.
On the television feed, Vonn was clearly heard screaming an expletive as she landed, then a despairing "Yes, yes," when someone asked, "Are you hurt?"
Race leader and eventual champion Tina Maze watched with her mouth agape. The concern also was obvious on the face of Vonn's sister, Laura Kildow, who has been traveling with her full time this season.
For 12 minutes, Vonn lay on the snow getting medical treatment before being airlifted by helicopter to a hospital in Schladming.
Vonn tore her anterior cruciate ligament and medial collateral ligament in her right knee, U.S. ski team medical director Kyle Wilkens said in a statement. The broken bone was described as a "lateral tibial plateau fracture."
Christian Kaulfersch, the assistant medical director at the worlds, said Vonn left the Schladming hospital on Tuesday afternoon and will have surgery in another hospital.
"She first wanted to go back to the team hotel to mentally deal with all what has happened," Kaulfersch said.
Team physician William Sterett, who was with Vonn, declined to offer any more information when contacted by The Associated Press.
Comebacks are nothing new for Vonn, who has also been afflicted by injuries at her last six major championships _ from a thumb she sliced on a champagne bottle at the 2009 worlds in Val d'Isere, France, to a bruised shin that she cured with Austrian cheese at the Vancouver Olympics.
This one, however, could prove the biggest test yet for the 28-year-old who won the downhill at the 2010 Vancouver Olympics.
Vonn took a month off this season after being hospitalized for an intestinal illness in November, and had just regained her form with two wins last month.
That was evident at the start of her Tuesday's run. She led Maze by 0.04 seconds at the first checkpoint and was just 0.12 back at the second interval and seemingly on her way to a medal, if not victory.
What went wrong is a matter of debate.
The start of the race was delayed by 3 1/2 hours because of fog hanging over the course and it began in waning light at 2:30 p.m local time. Even before Vonn's crash, a course worker fell and also had to be airlifted. He was reported to have broken his nose.
All the delays made for what skiers call flat light _ overcast and dreary conditions _ when Vonn raced.
"Lindsey did a great job on top and Lindsey has won a lot of races in flat light so the flat light was definitely not a problem," U.S. Alpine director Patrick Riml told the AP.
"We are upset obviously with what happened but if you don't know the facts and why they decided to start and what the weather forecast was it's hard to say without any reasoning," Riml said. "And they probably had a reason, otherwise they wouldn't have started."
It was difficult to say exactly when Vonn lost control.
"She jumped a little bit in the wrong direction and started to correct that a little bit in the air and put a lot of pressure on the outside ski exactly in the landing and she couldn't hold the pressure and then (she crashed)," said Atle Skaardal, women's race director for the International Ski Federation.
Skaardal defended the decision to race.
"I can confirm that the visibility was great, there were no problems, and the course was also in good shape," he said. "I don't see that any outside factors played a role in this accident. ... The other factors were like they were supposed to be for ski racing."