"I’m not concerned about it," Johnson said. "When those things happen, get in here and just work and work and work until things get right."
So far this season, Johnson has caught 19 passes for 329 yards and two touchdowns.
Johnson played 14 games last season -- many of them with a busted-up finger and ailing knee, both of which required surgery after the season. He still caught 84 passes for 1,492 yards and 12 touchdowns with the injuries.
Five players -- including four starters -- were limited Wednesday: defensive end Ezekiel Ansah (knee), running back Joique Bell (knee), defensive tackle Nick Fairley (bicep), fullback Montell Owens (hamstring) and right tackle LaAdrian Waddle (calf).
In better news for Detroit, safety James Ihedigbo practiced fully for the first time this regular season as he recovers from a neck injury. Pay attention to his status Thursday. If he practices fully then, it could mean he will end up making his debut with the Lions on Sunday.