The news was first reported Monday by Columbus Dispatch writer Shawn Mitchell.
If the timeline on the injury is accurate, Umberger won't return this season unless the Blue Jackets qualify for the Stanley Cup Playoffs. They have four games remaining, and currently lead the New Jersey Devils and Toronto Maple Leafs by three points and the Washington Capitals by four points for the second wild-card spot in the Eastern Conference.
Umberger had been a healthy scratch several times in recent weeks. He scored 18 goals and 34 points in 74 games this season.
I've got a lot of experience and there's a lot of young guys. It's even making me excited a little more. It's kind of a new life. At my age, I feel like I know a lot of things what to do, but I just cannot do it anymore. It's a lot easier to tell them what to do because they've still got the legs and hands to do it. I just know things, but I cannot do them anymore.
— Jaromir Jagr after making his Panthers debut in a win against the Sabres on Saturday