Shane Warne's World Cup campaign begins on Friday when he captains Victoria in a one-day match against Western Australia, 26 days after dislocating his shoulder.

"It is a little bit surprising I suppose how quickly it's come up," the Australian leg-spinner told reporters in Melbourne on Thursday.

"Obviously with the World Cup coming up, there's no point playing this early if we weren't ready because you wouldn't jeopardise the World Cup.

"I'm jumping out of my skin to play. All the movement, my range of movement, all those things are excellent and there's no pain really at all after I've bowled."

Warne dislocated his right bowling shoulder fielding a ball during a limited-overs international against England in Melbourne on December 15, casting doubt on whether he would recover in time for the World Cup, starting February 9.

Warne, Australia's leading wicket-taker in Tests and limited-overs internationals, had an operation the next day and team officials said his chances of playing in the tournament would depend on how quickly the injury improved.

The 33-year-old was chosen in Australia's 15-man squad for the World Cup after selectors were told they could still replace him if he didn't recover in time, but the Australian management has said he might be rested for the first half of the tournament to save himself for the finals.

"Yesterday we gave it a full-on work out. We did some catching and slips catching and under-arm throwing and just running around the field," Warne said.

"I bowled 11 or 12 overs yesterday straight. I bowled to a few of the guys and they came out really well. This morning I pulled up no problems.

"We've put in the hours. It hasn't been easy, it's been pretty painful.

"To get back now and to give myself every chance to be a part of the World Cup, we had to put in a lot of time and a lot of pain."