The Avalanche hope to have Landeskog back for the stretch run or for the playoffs and will know more after he has the surgery. The injury has been bothering the 29-year-old for a while and was not improving.
In 51 games this season, Landeskog has 30 goals and 59 points after signing an eight-year, $56-million contract.
Colorado will also be without defenceman Samuel Girard with a lower-body injury. The 23-year-old has 27 points in 56 games so far this season.