First rule as a patient. NEVER diagnose yourself based on someone else's problem. Secondly you have your Wikipedia reference-linkMRI. If the report says there is NO fracture then basically there is NO fracture. Please go back and consult your orthopod (or a second opinion). The appearance of your ankle is nothing like CPRS so forget about that one. We cannot provide any more advice without a physical examination. Sorry but that's the limitation of internet based forums at this time