Johnson, 28, has started every game for the Eagles this season. The 2017 All-Pro and Pro Bowl selection suffered his latest injury on the Eagles' first offensive series on Sunday in London. Halapoulivaati Vaitai filled in at left and right tackle during the clash, also stepping in for Jason Peters, but allowed two of the four sacks Carson Wentz suffered.
Eagles coach Doug Pederson did not offer any updates on Johnson's status when meeting with reporters on Monday.
The Eagles have a Week 9 bye before hosting the Dallas Cowboys at 8:20 p.m. on Sunday, Nov. 11 in Philadelphia.