Johnson, the No. 2 pick in April's draft, was injured during
Detroit's 56-21 loss to the Philadelphia Eagles when he landed hard
on his back while catching a pass.
"I went up for it and got spun around, and obviously, hit
pretty hard," he said Monday. "I've never had anything like this,
so I'm not sure what to expect. I'm getting treatment and we'll see
Lions coach Rod Marinelli said tests only showed bad bruising, and Johnson was moving very gingerly at the team's practice
facility on Monday. Marinelli said he considers Johnson "day to
Johnson has 10 catches for 189 yards and two touchdowns in three games.