By Chris Emma–

(CBS) The Bears’ offensive line is in flux with their two Pro Bowl guards still sidelined from practice.

Kyle Long (arm) and Josh Sitton (ankle) were held out of Bears practice once again Thursday. Both of their statuses would seem to be up in the air for Monday’s home contest with the Minnesota Vikings.

Long suffered an arm injury during Chicago’s loss at Green Bay last Thursday. He was removed from the game in what could be considered a precautionary measure. Long has also been dealing with a shoulder injury all season. Sitton suffered an ankle injury during the final drive of the Bears’ loss to the Jaguars two weeks ago. Ted Larsen started at left guard, and Eric Kush took over at right guard last week.

In Thursday’s practice, the Bears were also missing linebacker Danny Trevathan, receiver Eddie Royal, cornerback Bryce Callahan, linebacker Nick Kwiatkoski and defensive back Deiondre’ Hall.

Quarterback Jay Cutler and running back Jeremy Langford practiced for a second straight day. Thursday brought the Bears’ usual Wednesday work, with two more days of preparation ahead.

Chris Emma covers the Bears, Chicago’s sports scene and more for CBSChicago.com. Follow him on Twitter @CEmma670 and like his Facebook page.