The Green Bay Packers injury woes may be continuing.

Packers right tackle Bryan Bulaga left Monday night’s game to the Detroit Lions with what is believed to be a significant injury to his right knee.

The Packers lost to the Lions 30-17.

“They seem very concerned about it,” Packers head coach Mike McCarthy said after the game.

Green Bay has been struggling with their offensive line as Monday night’s game marked only the second time this season that all five starters on the Packers’ offensive line had played together.

Bulaga had to be helped off the field and carted to the locker room and Justin McCray, who has started two games at right tackle and two at left guard this season, replaced him in the game.

Green Bay also lost safety Morgan Burnett to a groin injury.