LAKE FOREST, Ill. -- The injuries keep piling up for the Chicago Bears, but head coach John Fox did not express much concern about the team’s high number of bruised bodies making it difficult to prepare for the regular season, which is less than three weeks away.

“I think it's pretty much the same in the other 31 cities,” Fox said Tuesday. “It’s been about the same for me the last 15 years, so there's a difference between injuries and owies. We've had a couple injuries, and now it's just about getting everybody healthy for (the regular-season opener Sept. 11 against) Houston.”

One key situation to monitor is the heath of perennial Pro Bowl guard Kyle Long, who is nursing a shoulder injury. The Bears cannot, under any circumstances, afford to lose Long for an extended period of time, especially after center Hroniss Grasu went down for the season with a torn ACL.

Fox, however, would not say whether he expects Long to play in Chicago’s Week 1 road game versus Houston.

“It doesn’t really matter what I think,” Fox said. “There are medical people involved, and when he’s cleared he’ll play.”

In the event Long’s shoulder problem is serious, veteran Ted Larsen, who took over for Grasu at center, is experienced at guard. The Bears also list second-year lineman Cornelius Edison as their second-team center on the preseason depth chart.

In other injury news, running back Jeremy Langford (foot), linebacker Danny Trevathan (hamstring) and tight end Tony Moeaki (hamstring) were among the notable players to sit out Tuesday.

Fox said third-round pick Jonathan Bullard was excused for a second consecutive practice for personal reasons, but the coach indicated Bullard should be available for Saturday’s preseason game against Kansas City.

One small piece of good injury news: first-round pick Leonard Floyd returned after missing time with a tight hamstring.