'Significant concern' for England after Atkinson goes off suffering a hamstring problem.
The pace bowler further complicated the injury concerns plaguing England upon exiting the ground on the second morning in the Melbourne Test in the Ashes series.
Atkinson felt a problem in his hamstring after the final ball of the fourth over at the MCG.
Team management indicated Atkinson reported "discomfort" and required time off the field in order to be assessed "over the next few hours".
The concluding match in this Ashes battle in Sydney begins at the end of the week.
The English side has already lost key quicks one seamer with a knee problem and Jofra Archer because of a side injury during this series.
Matthew Fisher was brought into the squad as cover for Wood.
Atkinson struggled early in the series, taking just three wickets.
He was left out for the Adelaide match, before being recalled for the Boxing Day match in the playing XI.
The county bowler performed better in the fourth Test, taking two wickets in Australia's first innings, and scoring 28 runs with the bat among just a trio of English batsmen to reach double figures.
Following a brief spell late on the first day, he returned the next day and had nightwatchman edging to the keeper.
Unfortunately, on the final ball of the fifth over, he sent down a variation to Travis Head and suddenly grabbed for his hamstring.
Atkinson was recalled for the fourth Ashes Test after being left out of the third.
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