The 19-year-old had one goal and two assists playing for Sweden before he was injured Sunday. The Canucks website said he will need 3-4 weeks to recover after surgery but the injury "should not impact his summer training plans."
Pettersson, the No. 5 pick in the 2017 NHL Draft, this season was named most valuable player, forward of the year, rookie of the year and playoff MVP in the Swedish Hockey League, winning the championship playing for Vaxjo. He led the league with 56 points (24 goals, 32 assists) in 44 games, a scoring record for a junior-aged player in the league.
Pettersson had 19 points (10 goals, nine assists) in 13 playoff games, and then joined Sweden in Denmark for the world championship.
The Canucks have at least two openings at forward next season after the retirement of center Henrik Sedin and left wing Daniel Sedin.
"I want to play in the NHL as quick as possible, but I want to be ready to be a good player there," Pettersson told the Canucks website. "I don't want to just make it to the NHL and play in a couple games. I want to be a player that makes an impact and helps my team win every night. Is that this year? I don't know. We'll see."
