"Just got to wait it out," Carroll said. "Wait out recovery. He's not working out yet. He can't do anything as far as the physical workouts. He's walking. That's what he's doing. He feels fine. It's very frustrating for him because he feels fine, but he's just got to make it through the recovery."
Carroll said he doesn't think McDowell's injuries are career-threatening. He was asked if McDowell could play this year.
"I don't know that," he said. "I like to hope so, but I don't know that."
From the linked article. It sounds more and more like a concussion.
I was reading about Sidney Crosby who was concussed and out for a few months a couple of years ago and he was talking about a similar thing. He could walk, but not work out while he recovered.
I'd rather it be bone breaks as they can heal and it can be defined, but concussions can't in the same way.