Vermaelen, 29, sustained the injury playing against Russia at the World Cup in June and the club confirmed that he was expected to be out for around four months.
He has yet to make his competitive debut since joining from Arsenal in August and his signing has become something of an embarrassment for the board.
"Thomas Vermaelen was operated on with a satisfactory result," Barca said on their website on Tuesday.
(Writing by Iain Rogers, editing by Tony Jimenez)
Share
