The Hurricanes said his expected recovery time is about six weeks.
Sekera, 27, leads Carolina defensemen with 44 points (11 goals), third on the team, although he hasn't played since April 1. He leads the Hurricanes in blocked shots (127) and average ice time (23:40).
The Hurricanes acquired Sekera in a trade with the Buffalo Sabres at the 2013 NHL Draft.
It's not always going to be pretty, especially against a great goalie [Lundqvist] like that. My goals are never how you draw them up. It's just a matter of grinding it out and trying to create havoc in front and good things happen.
— Capitals forward Jay Beagle on scoring in their Game 3 victory against the Rangers on Monday