Vonn tweets video of gruesome dog attack injuries

US skiing star Lindsey Vonn has needed hospital treatment after being bitten as she tried to break up a fight between her pet dogs.

The 2010 Winter Olympics downhill gold medallist posted footage of her bloodied thumb on her Twitter account while confirming details of the incident.

"So the story is that my dogs got rowdy fighting over a dang frisbee and I tried to break it up but got bit instead. Fun weekend," the 31-year-old wrote on Twitter.

Footage posted on Twitter and Instagram showed a smiling Vonn in a hospital cap and gown being treated for the wound to her hand.

The injury was not serious and Vonn said in a post on her website she planned to be back skiing on Sunday.

Vonn, the four-time World Cup champion, is on the mend after suffering a broken ankle during a training run in New Zealand in August.

Vonn, the most successful woman Alpine skier in US history, has suffered a series of mishaps over the years, including a serious knee injury which ruled her out of the 2014 Sochi Olympics.