Ricciardo may need surgery and could be out for a while

Daniel Ricciardo has flown to Barcelona for possible surgery after breaking his hand in Dutch Grand Prix practice and could miss several races, Red Bull boss Christian Horner said on Saturday.

The experienced Australian, who had been preparing for his third race with AlphaTauri after making a comeback as replacement for dropped Dutch driver Nyck de Vries, crashed in Friday's second session at Zandvoort.

"He's headed off today to Barcelona, they may even have a little operation on him tomorrow to just tidy up where that break is," Horner told Sky Sports television of Ricciardo's next steps.

Barcelona-based MotoGP traumatology specialist Javier Mir is renowned for his work and operated on Aston Martin's Lance Stroll when the Canadian broke his wrists before the start of the season.

Stroll was able to race in Bahrain two weeks later.

"It's quite a clean break and then of course it's all about the recuperation and how long that takes. Any normal human being would probably be about 10-12 weeks but we know that these guys aren't normal," said Horner.

"So it will all be about the recovery process... Is it going to be three weeks, is it a month, is it six weeks? Nobody really knows."

The Italian Grand Prix at Monza would appear to be a non-starter, coming the weekend after Zandvoort, with Singapore then on Sept. 17 and Japan on Sept. 24.

Ricciardo sat out the first 10 races of the season after initially planning to take a year out after an unhappy stint at McLaren but had said on Thursday that he was re-energised and motivated again.

"The thing he was most frustrated about talking with him last night was he's just taken a bunch of time off, just got his mojo back, getting back into it and now he's on the bench again," said Horner.

"I'm