question: fell and twisted ankle in 3/2012 and diagnosed with unspecified sprain/strain left foot.  Xrays showed nothing broke, MRI shows severe edema.  12 PT treatments, that helped a month ago.  I continue to wrap wth ace bandage, walk and still my foot and ankle are extremely swollen, unable to get left shoes on and the ball of my foot hurts now.  What could ths be???????