Oruwariye (back) was placed on injured reserve Wednesday.
Oruwariye suffered the injury in Sunday's loss to the 49ers and was unable to return to the game. He'll now be sidelined for at least the Cowboys' next four games while he tends to the injury. With DaRon Bland (foot) expected to return this week, Oruwariye's absence may be felt less, but it'll still be a blow to Dallas' secondary depth.