Trouba, 23, has emerged as a key player this season for the Jets, who sit atop the Central Division with a 29-13-8 record. In 50 games, Trouba has three goals, 20 points and a plus-six rating. He is also second on the team in ice time, averaging 22:09 per game. In five NHL seasons, all with the Jets, he has 125 points (34 goals, 91 assists).
Maurice said Trouba was injured near the end of Thursday's 4-3 overtime loss to the Anaheim Ducks.
"If we have an area of depth, it's right defense," Maurice said. "That's the one place where if we have a guy go down we have players who want the minutes and can handle the minutes."
Winnipeg had already lost center Mark Scheifele, who went down with an upper-body injury Dec. 27 and was expected to be out six to eight weeks.