Barbara
Ankle and foot pain can be caused as you said, by many things. Some of them are not orthopedic. I was recently diagnosed with an auto-immune disease that causes that very type of neuropathy. There are other causes as well. If your MRI comes back normal, ask your doctor to do a complete blood work up to make sure that your problem is not an auto-immune one. I hope you find your answer soon and can get some relief. Barb