Why is Deion Sanders riding a scooter?

Okay, so maybe I'm out of the loop. Has he become somehow disabled? Is he undergoing some type of surgery that causes him to stay off his feet as much as possible? I've seen several instances of him riding a motorized wheelchair scooter, like those for people with limited mobility. I've been looking around the net for a couple of hours and can't find anything, although I see he had a lawsuit about injuring someone with his scooter. Why is Deion Sanders in a limited mobility chair? This has been driving me crazy for the past week. I hope someone has the answers to this for me. Thank you!