Johnson is expected to miss 4-to-6 weeks after suffering a hairline fracture of his scapula during Sunday's 41-10 loss to the Cardinals, Cameron DaSilva of USA Today reports.
Johnson logged eight total tackles and one interception over 58 defensive snaps this season before going down with the shoulder injury. The 28-year-old could be placed on injured reserve, which would keep him out for at least the Rams' next four contests. Expect rookie third-round pick Kamren Kinchens to see increased work in the Rams secondary while Johnson recovers.