Fractures heal in 4-8 weeks, and this minor compression will probably be healed in 5; if Tony were 10 years younger, I'd say 4.
Magnetic resonance imaging is a detailed computer reproduction of scanned tissues based on variations in their ionic charges. Minute changes are detectable, so the diagnosis of Tony's injury was discovered this way, and the progress seen at 2 weeks will allow a better prediction of an endpoint.