Danny Grewcock's replacement Simon Shaw could be pushed into action for this weekend's quarter-final for England against Wales.
Official confirmation for Shaw came on Monday from the England camp and World Cup organisers.
The Wasps second-row forward was due to arrive in Brisbane on Monday night, UK time. He was summoned following Grewcock's latest injury setback - a broken left hand - sustained during the 111-13 Pool C victory over Uruguay.
Grewcock started against Uruguay, following three weeks out recovering from a broken toe suffered when England were warming up before tackling Georgia in Perth last month.
Shaw could find himself on bench duty as cover for Martin Johnson and Ben Kay when the RBS 6 Nations champions tackle Wales at Suncorp Stadium on Sunday.
"Danny has broken his hand and Simon Shaw is on the way," said England head coach Clive Woodward.
There is more encouraging news about Bath wing Iain Balshaw, who was carried off with an ankle problem against Uruguay after producing a sparkling two-try performance.
"The medical team say that Iain Balshaw is looking okay," added Woodward.
"It's not as bad as it looked, in terms of him coming off on a stretcher, but I won't get a full medical report until later.
"I intend to announce the team to play Wales on Wednesday, and until then, you just keep a very clear head about it.
"Balshaw played very well against Uruguay, and I would be keen to have him involved in some way."
Flanker Richard Hill, though, continues to give cause for concern, after missing England's last three World Cup games through hamstring trouble.
Hill, capped 61 times, is fighting back to fitness, but he might not make it in time for the Wales clash.
"It's kind of testing the medical team, put it that way," Woodward conceded. "He's going full-on on a bike, the scan looks okay, yet they can only get him up to 70% running at the moment.
"I am very clear about the side going into next weekend. The whole thing I've got to make sure I am absolutely right about is injuries.
"We've got such a strong squad, that I don't want to take anyone into the 22 who is not 100% fit.
"We don't need to do that, and I have just got to make sure that we make the right calls on the medical front, and not go with anyone who is carrying anything."