James injured the knee in the first half of the Cowboys' 34-27 loss to the Tennessee Titans on Sunday. He missed a few plays but returned.
James was in the trainer's room getting treatment Monday and was not available for comment.
In other injury news for the Cowboys, tight end Martellus Bennett has a sprained right ankle and has been wearing a walking boot since leaving Cowboys Stadium on Sunday. It's unknown how long he will have to continue to wear it.
Bennett missed practice time after he sprained his left ankle before the start of training camp in July. He reinjured the left ankle in a Week 3 win over Houston.
Right guard Montrae Holland is still recovering from a slightly swollen right eye and a cut across his nose that required four-five stitches. Holland had replaced Leonard Davis in the starting lineup, only to leave the game because of his injury.