Email Dr. Delfinin on ask the expert. I am not sure if you are familiar with Casey Martin (I think that is his name) the pro golfer that won a case against the PGA...they had to allow him to ride in a cart because he did not have the strength in his leg to walk 18 holes. He has a similar situation as you describe with his leg.
Good luck and keep us posted.
VBF Director of Family Services
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