Fast bowler Atkinson Adds to the English team's Fitness Problems.
'Major setback' for the touring side after Atkinson is forced off suffering a hamstring problem.
The pace bowler increased the injury concerns plaguing England when he left the playing area on the second morning in the Melbourne Test against Australia.
The pace bowler experienced discomfort in his left hamstring immediately following a delivery in his spell at the MCG.
The touring camp reported the 27-year-old had experienced "tightness" and would spend time away from the action for further assessment "over the next few hours".
The final Test in this Ashes battle beginning on 4 January begins this coming Sunday.
The English side has been without fast bowlers Mark Wood to a knee injury and another paceman with an abdominal strain during this series.
Matthew Fisher was brought into the squad to provide backup.
The seamer had a tough time in the opening two Tests, taking just a handful of scalps.
He was left out from the previous Test, only to be brought back for the Boxing Day match in the playing XI.
The county bowler improved at the MCG, bagging two scalps with the ball, and scoring 28 runs as a batsman being one of only three England players who passed ten runs.
Following a brief spell in Australia's second innings, he resumed on Saturday morning and removed Scott Boland Scott Boland caught behind.
However, on the final ball of his spell, he sent down a slower ball to Travis Head and suddenly grabbed at his leg.
Gus Atkinson returned to the side for the Boxing Day Test following his omission of the third.
