Alexis Saelemaekers underwent surgery for a right ankle fracture suffered during the weekend's 1-1 draw at Genoa in Serie A, Roma said on Tuesday.
Roma said that the operation on Belgium attacker Saelemaekers' medial malleolus was successful, adding that he "will begin his rehabilitation in the coming days".
The 27-year-old, who is on loan from AC Milan and has played 12 times for his country, is expected to be out for at least two months.
Roma are yet to win this season under Daniele De Rossi, whose team host Udinese on Sunday.
