'Bad news': Australia rocked by Ellyse Perry blow at World Cup

Aussie captain Meg Lanning has confirmed Ellyse Perry won't play their World Cup semi-final clash with West Indies on Wednesday in a devastating blow.

The ICC's women's player of the decade left Australia's group stage win over South Africa last Tuesday after bowling just three overs.

Perry has been dealing with back spasms and hasn't trained since.

'THIS IS SAD': Cricket fans shattered over Mitch Marsh news

'NEED TO STOP': Aussie cricket star's brave mental health reveal

The all-rounder didn't take part in Australia's final training session on Tuesday morning at the Basin Reserve, with Lanning later confirming that she won't play against West Indies.

"Unfortunately she just ran out of time to prove her fitness," Lanning said.

"We'll keep assessing her if we are to progress in the tournament so unfortunate for her and the team, obviously a big blow, but we feel like we've got some good depth to be able to cover it and we're going to have to do that tomorrow."

Lanning said the team is optimistic that Perry will be able play the final on Sunday should they they get past the West Indies.

"She hasn't done a lot (of training) over the past week to be fair," Lanning said.

"She batted a little in the nets yesterday and felt ok but wasn't in a position to perform at the level needed tomorrow.

"That's why we've made the call today.

"We haven't looked too far ahead, we'll keep assessing her if we are to progress but the team and squad is very focussed on tomorrow.

"I'm sure there's work going on in the background to get her up if we were to get through."

Fans were left shattered for Perry after injury also saw her miss the T20 World Cup final last year.

Ellyse Perry coy on availability for World Cup final

The 31-year-old said she'd never experienced spasms in her career before, downplaying the ailment as "not hugely serious".

"It came on really quickly. Because of that there's no longstanding history with back issues or anything chronic," she said.

"Each day we've assessed it, seen where it's at, and it definitely has been improving, which is really nice.

"It's going really well, but obviously just need to make sure that I'm in the best possible spot to be able to contribute, if I was to play.

"We'll do a couple more things at training in the next next few days. And if I get there, I do. Fingers crossed."

Perry famously missed the T20 World Cup final, played in front of a bumper 86,174 fans at the MCG, when a hamstring injury brought her withdrawal from that tournament.

The all-rounder dodged questions about whether she might be able to play as a batter only, or even rest from Wednesday's semi-final in the hope of being fresher for a potential final.

"I don't think you can have that approach to World Cup games," she said.

"You have to play each game. That's the most important thing at the time rather than casting your mind ahead."

The winner of the Australia-West Indies match will play England or South Africa - who play in the second semi on Thursday - in Sunday's tournament finale.

with AAP

Click here to sign up to our newsletter for all the latest and breaking stories from Australia and around the world.