Charlton defender Patrick Bauer is set to be fit for Tuesday’s game against Rochdale, while Billy Clarke has been ruled out for two weeks.
The pair, who have been first-team regulars this season, missed the 2-2 draw with MK Dons through injury.
Addicks top scorer Tariqe Fosu started from the bench after he was subbed off against Portsmouth in the Checkatrade Trophy with a muscle complaint.
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Robinson said: “Tariqe’s thigh is still tight so maybe we’ll be without him [from the start] on Tuesday.
“Patrick will be back, hopefully, and Billy Clarke will be out for another two weeks.
“It’s a calf injury for Clarkey, groin for Bauer and thigh for Tariqe. Take your pick on the muscles in the leg, they've got them!”
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