The Belgian will miss Barca's league games against Alaves next weekend and the local derby away to Espanyol the following weekend, reports Xinhua news agency.
He will also be sidelined for this week's King's Cup quarter-final return leg against Espanyol and for the semi-final if Barca are able to overturn their 0-1 deficit from the first leg.
Vermaelen was making his 13th appearance of the season for Barca; his best run of games without injury since joining from Arsenal in 2014 and he was playing his best football since his move to Spain.
His injury comes just as Umtiti returned to fitness and he was substituted by the Frenchman on Sunday, while new signing Yerry Mina will also add defensive options for Barca boss Ernesto Valverde in the coming weeks.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
