Fast bowler Atkinson Compounds England's Injury Problems.
'Significant concern' for the English camp as Atkinson is forced off with a hamstring injury.
The pace bowler added to the fitness woes of the England squad after leaving the field during Saturday's play of the Boxing Day Test versus the Australians.
The right-arm seamer pulled up with his left hamstring immediately following a delivery of the fourth over during the morning session.
The touring camp stated the 27-year-old reported "discomfort" and required time away from the action to undergo evaluation "during the day".
The final Test in this Ashes battle in Sydney begins this coming Sunday.
The visitors have been without strike bowlers Mark Wood due to knee trouble and another paceman with an abdominal strain on this Ashes tour.
A replacement bowler was brought into the squad as injury reinforcement.
Atkinson struggled in the opening two Tests, managing only a handful of scalps.
He was omitted from the previous Test, then recalled for the Boxing Day match in the playing XI.
Atkinson performed better in the fourth Test, bagging two scalps with the ball, and scoring 28 runs as a batsman as one of just three England players to get into double digits.
Following a brief spell in Australia's second innings, he returned on Saturday morning and removed Scott Boland taken by the wicketkeeper.
However, on the final ball of that over, he delivered a variation to Travis Head and immediately felt at his leg.
The English bowler was brought back for the Boxing Day Test following his omission the Adelaide game.
