Pettersson suffered a lower-body injury in the second period when he got tangled with fellow rookie and Habs forward Jesperi Kotkaniemi. Pettersson’s right knee was caught between Kotkaniemi’s legs as they both fell to the ice. The Swede stayed down before getting to his feet and going to the dressing room.
“I’ve watched it a lot of times,” Vancouver coach Travis Green said. “It’s not a dirty play by their player at all. [Pettersson] gets hooked a little bit. Petey pushes back on him and leans back. Probably tries to give him a bit of a reverse hit, and two young guys fall to the ice. It’s not a penalty.”
The injury came one day after Pettersson was named an NHL All-Star and completed a hat trick in overtime to lift the Canucks over the Ottawa Senators.
The 20-year-old center has 22 goals, including seven game winners, and 20 assists this season.
The Associated Press contributed to this report.