My Friend A 31 Yr Old Male Had A Car

My friend a 31 yr old male had a car accident a few days ago. I think he must have hit the steering wheel. He went to the E. R. had xrays of chest. Finding no broken bones. Today he told me that last night his rib popped out and was poking into his skin. It did go back in. I told him to go to the E. R. Maybe they could rap it.