Dembele, 20, flew to Helsinki on Monday to be operated on by specialist doctor Sakari Orava after rupturing a tendon in the 2-1 win over Getafe.
Zinedine Zidane reflects on Gareth's Bale's goal and performance in Real Madrid's 3-1 win at Real Sociedad.
Dembele was making only his third appearance for Barca, and his first La Liga start, when he pulled up after 25 minutes against Getafe.
Real Madrid equalled the world record of scoring in consecutive matches - set at 73 by Brazilian club Santos in 1963 - when Borja Mayoral netted.
Dani Carvajal says he would be "delighted" to be Real Madrid captain in the future after signing a two-year contract extension on Monday.