The team said Saturday that the 36-year-old Robidas is expected to miss four to six months, jeopardizing his return this season. He was injured when he slid hard into the boards in the second period of a 2-1 shootout loss to Chicago on Friday.
Robidas ranks fourth among Dallas defencemen in games (704), assists (165) and points (211). The Stars signed him as a free agent in 2005. He has five points in 24 games this season.
Oleksiak leads all Texas Stars defencemen with three goals in 22 games. The 20-year-old made his debut for Dallas last season.