"I don't see him going," coach Dan Campbell said Friday before Ragnow was ruled out. "But he is improving. He's getting better."
Ragnow has appeared in 11 games this season, also missing Week 8 against the Las Vegas Raiders with toe and calf injuries. Without Ragnow, the Lions will start veteran offensive lineman Graham Glasgow in his place.
Ragnow was selected 20th overall by the Lions in the 2018 NFL draft.