Seamer Atkinson Compounds the English team's Fitness Problems.
'Major setback' for England as Atkinson is forced off suffering a hamstring problem.
The pace bowler added to England's injury problems upon exiting the field during Saturday's play of the Boxing Day Test against Australia.
Atkinson experienced discomfort in his hamstring post-delivery of the fourth over on Saturday.
The touring camp indicated Atkinson had experienced "tightness" and was to take time on the sidelines for further assessment "during the day".
The concluding match of the tour at the SCG begins this coming Sunday.
The visitors have previously lost strike bowlers one seamer due to knee trouble and another paceman with an abdominal strain on this Ashes tour.
A replacement bowler was brought into the squad to provide backup.
His form was underwhelming early in the series, managing only a handful of scalps.
He was left out for the Adelaide match, before being recalled for the fourth Test to fill the void.
Surrey's Atkinson performed better in the fourth Test, claiming a couple of wickets in Australia's first innings, then making 28 with the bat among just a trio of teammates who passed ten runs.
Post a single over in Australia's second innings, he resumed the next day and had nightwatchman taken by the wicketkeeper.
Yet, at the end of the fifth over, he delivered a variation to Travis Head and promptly felt at his leg.
Gus Atkinson returned to the side for the fourth Ashes Test after being left out the Adelaide game.
