Jackson (shoulder) was activated from injured reserve Monday.
The Rams designated Jackson (shoulder) for return to practice from their injured reserve list Thursday.
The Rams placed Jackson (shoulder) on injured reserve Wednesday.
Jackson is expected to be placed on injured reserve after fracturing his scapula on Sunday, Ian Rapoport of NFL Network reports.
Head coach Sean McVay told reporters Monday that Jackson is expected to miss "a significant amount of time" with a shoulder injury, Greg Beacham of the Associated Press reports.
Jackson (shoulder) was a full participant in the Rams' practice Wednesday, Sarah Barshop of ESPN reports.
Jackson is expected to miss about six weeks with a bruised scapula sustained during Wednesday's practice, Jeremy Fowler of ESPN.com reports.
Jackson left Wednesday's camp session with an apparent arm injury, Cameron DaSilva of USA Today reports.
Jackson (knee) is set to sign a three-year, $51 million contract with the Rams on Wednesday, Mike Garafolo of NFL Network reports.
Jackson (knee) has been ruled out ahead of Sunday's NFC Championship Game against the 49ers, Tim Twentyman of the Lions' official site reports.