A training mishap involving Stephen Larkham sent shockwaves through the Wallabies camp on Tuesday with the veteran flyhalf unable to complete the team's afternoon session.

The Wallabies playmaker rolled his left ankle during a routine training drill and was subsequently carried off the field by team medical staff.

The 33-year-old admitted the injury was initially very painful but is confident of training with the side on Thursday.

"It's good, I just have to miss training today [Wednesday] and hopefully I'll be right for training tomorrow; it certainly pulled up pretty good this morning so pretty happy with that," Larkham said.

"(It was) just an accident, I was just trying to step through between Sharpey (lock Nathan Sharpe) and one of the other players in a little drill that we had and just went over on it; I think I actually went on the inside of it and couldn't continue after that."

Larkham, who has been no stranger to injury throughout his career, admitted to a moment of 'minor panic' but said the mishap will have no affect on his World Cup preparations.

"I've got really loose ligaments in my ankles, if any ligaments at all, so I'm pretty prone to that happening and it's a minor injury as far as I'm concerned," Larkham said.

The 101-Test-veteran has his sights firmly set on his third and final World Cup campaign beginning next month and said it is vital the team maintains its momentum from their recent Tri Nations performances.

"Our plan for the World Cup has been to basically play with our best side through the Tri Nations to get a little bit of combination and a little bit of confidence and I think we've done that and it's a matter of continuing that now through to the World Cup," Larkham said.

"You don't want to take too much away from the (opening) game against Japan but realistically the game against Wales is the biggest of the pool matches for us and we need to build for that."

The Wallabies break camp on Thursday only to reassemble on Sunday for a five-day SAS style training camp, which Larkham...is looking forward to.

"I'm certainly looking forward to it, anything where there's a competition involved I certainly enjoy that sort of stuff, it's just a matter of what they're going to put us through … it's a bit exciting at the moment just to speculate as to what's going to happen," he said.