Fast bowler Atkinson Compounds England's Fitness Worries.
'Major setback' for the touring side as Atkinson goes off due to a hamstring issue.
The pace bowler added to England's injury problems after leaving the ground early on day two of the Boxing Day Test in the Ashes series.
The right-arm seamer felt a problem in his hamstring post-delivery in his spell at the MCG.
The England team stated the 27-year-old felt some "soreness" and was to take time away from the action to undergo evaluation "in the coming hours".
The series decider in this Ashes battle in Sydney gets underway on Sunday, 4 January.
The visitors have previously lost fast bowlers one seamer due to knee trouble and Jofra Archer with an abdominal strain during this series.
A replacement bowler was called up as cover for Wood.
Atkinson struggled in the opening two Tests, claiming a mere a handful of scalps.
He was dropped from the previous Test, only to be brought back for the Melbourne Test in the playing XI.
Atkinson showed better form in Melbourne, bagging two scalps in Australia's first innings, and scoring 28 runs as a batsman as one of just three English batsmen to reach double figures.
After bowling one over at the end of day one, he resumed on Saturday morning and removed Scott Boland Scott Boland caught behind.
However, on the final ball of that over, he sent down a slower ball to Travis Head and promptly felt his left hamstring.
Gus Atkinson was brought back for the fourth Ashes Test having missed the Adelaide game.
