The Green Bay Packers placed offensive tackle Byron Bell on injured reserve, the team announced Wednesday.
Guard Nico Siragusa was signed off the practice squad in a corresponding move.
Bell made nine starts and 12 appearances this season before sustaining a knee injury in Green Bay's 20-17 setback to the Arizona Cardinals on Dec. 2.
The 29-year-old Bell, who is listed at 6-foot-5 and 320 pounds, was one of three starters to sit out Sunday's 34-20 victory against the Atlanta Falcons. He was replaced by Justin McCray.
"Byron's made a real valuable contribution, but Justin, as a coach, when you go to bed at night, you think about the faith you have in your guys and this guy is a competitor and you appreciate that," Packers interim head coach Joe Philbin said.
Bell did not commit a penalty this season for the Packers (5-7-1), who visit the NFC North-leading Chicago Bears (9-4) on Sunday (1 p.m. ET).
Siragusa, who is 6-foot-4 and 320 pounds, steps in after spending his entire rookie season in 2017 on injured reserve after sustaining a knee injury in training camp.