Fast bowler Atkinson Adds to England's Fitness Concerns.
'Serious blow' for the touring side after Atkinson is forced off due to a hamstring issue.
The pace bowler further complicated England's injury problems after leaving the field early on day two of the fourth Ashes Test in the Ashes series.
The pace bowler pulled up with his hamstring after the final ball in his spell on Saturday.
The England team reported Atkinson felt some "soreness" and would spend time on the sidelines to undergo evaluation "during the day".
The concluding match of the tour in Sydney begins this coming Sunday.
England have previously lost strike bowlers Mark Wood with a knee problem and Jofra Archer with an abdominal strain on this Ashes tour.
Matthew Fisher was brought into the squad as cover for Wood.
The seamer had a tough time early in the series, taking just three wickets.
He was dropped of the third Test, only to be brought back for the fourth Test as Archer's replacement.
Surrey's Atkinson showed better form in Melbourne, taking two wickets in Australia's first innings, before adding 28 with the bat being one of only three teammates who passed ten runs.
Post a single over late on the first day, he returned on Saturday morning and had nightwatchman edging to the keeper.
Yet, towards the conclusion of that over, he delivered a slower ball to the batsman and immediately felt for his hamstring.
Atkinson returned to the side for the Boxing Day Test having missed the previous Test.