Paceman Atkinson Adds to the English team's Fitness Concerns.
'Significant concern' for the touring side after Atkinson is forced off due to a hamstring issue.
The English seamer added to the fitness woes of the England squad upon exiting the playing area on the second morning of the Boxing Day Test versus the Australians.
Atkinson experienced discomfort in his left leg post-delivery in his spell at the MCG.
The touring camp reported the 27-year-old reported "discomfort" and would spend time away from the action for further assessment "over the next few hours".
The series decider of the tour in Sydney starts on Sunday, 4 January.
The visitors have been without key quicks one seamer with a knee problem and another paceman to a side strain on this Ashes tour.
A replacement bowler was brought into the squad as cover for Wood.
Atkinson struggled in the opening two Tests, claiming a mere a handful of scalps.
He was left out of the third Test, only to be brought back for the Boxing Day match to fill the void.
The county bowler performed better in the fourth Test, bagging two scalps with the ball, and scoring 28 runs with the bat as one of just three teammates who passed ten runs.
Post a single over at the end of day one, he resumed the next day and had nightwatchman taken by the wicketkeeper.
However, at the end of the fifth over, he delivered a variation to the batsman and immediately felt his left hamstring.
Gus Atkinson was brought back for the fourth Ashes Test after being left out the Adelaide game.
