There is a secondary growth center at the base of the 5th metatarsal in children. It would not be the first time this was mistaken for a fracture. I generally x-ray both feet to compare.
I can not tell you much more without examining him. The doctor who sees him can give more information.
Posted By Vivian Abrams DPM on February 24, 2006 at 23:06:32:
A silicone insert on the back of the Achillotrain leaves tendon pressure-free and provides intermittent compression for the reduction of swelling and edema.