Ahhh...... My Poor Poor rodent! Help Please! I really need it!?

See how he is doing tomorrow... Hopefully it is just sprained but if it still bad I would bring him to a vet. I work in a pet store and last week I actually had a customer who's hamsters leg got caught in the wheel (try to get a solid surface wheel if you can for future use) and did the same thing you are talking about. It turned out to be broken. :-(