Seamer Atkinson Adds to the English team's Fitness Worries.
'Significant concern' for the touring side after Atkinson leaves the field due to a hamstring issue.
Gus Atkinson increased England's injury problems upon exiting the playing area during Saturday's play of the fourth Ashes Test in the Ashes series.
The right-arm seamer felt a problem in his left hamstring after the final ball of the fourth over at the MCG.
The England team indicated Atkinson felt some "soreness" and was to take time on the sidelines to undergo evaluation "during the day".
The concluding match in this Ashes battle beginning on 4 January starts at the end of the week.
England have already lost key quicks one seamer due to knee trouble and Jofra Archer because of a side injury during this series.
A replacement bowler was brought into the squad as cover for Wood.
His form was underwhelming during the first two matches, taking just three wickets.
He was left out of the third Test, only to be brought back for the Boxing Day match in the playing XI.
Surrey's Atkinson improved at the MCG, claiming a couple of wickets with the ball, and scoring 28 runs with the bat among just a trio of teammates to get into double digits.
Post a single over in Australia's second innings, he resumed on Saturday morning and dismissed the nightwatchman Scott Boland caught behind.
However, on the final ball of the fifth over, he bowled a variation to the batsman and promptly felt for his hamstring.
Atkinson returned to the side for the fourth Ashes Test following his omission the Adelaide game.
