Fast bowler Atkinson Compounds 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 increased the fitness woes of the England squad after leaving the playing area on the second morning in the Melbourne Test against Australia.
The pace bowler felt a problem in his left leg after the final ball of the fourth over on Saturday.
The England team indicated Atkinson felt some "soreness" and would spend time off the field in order to be assessed "over the next few hours".
The final Test in this Ashes battle beginning on 4 January begins this coming Sunday.
England have already lost key quicks Mark Wood due to knee trouble and Jofra Archer to a side strain on the current trip.
Matthew Fisher was added to the party to provide backup.
His form was underwhelming during the first two matches, claiming a mere a handful of scalps.
He was dropped from the previous Test, before being recalled for the fourth Test to fill the void.
Atkinson improved at the MCG, bagging two scalps in Australia's first innings, and scoring 28 runs while batting among just a trio of English batsmen to reach double figures.
Post a single over in Australia's second innings, he resumed on Saturday morning and removed Scott Boland taken by the wicketkeeper.
However, towards the conclusion of his spell, he sent down a change of pace to the batsman and promptly felt for his hamstring.
Gus Atkinson returned to the side for the fourth Ashes Test having missed of the third.
