The original plans did not include showing FDR in his wheelchair, but out cry from advocates for the disabled
caused the designer/s to add the seated statue of him in the chair. His aides (in fact the whole government apparatus) went to huge lengths to conceal his disability from the public. And, did you know that it is now thought that FDR did not have polio but had Gillain-Barre syndrome?
Good point. I know someone who has Gillain-Barre Syndrome and she has told me she at times have a very hard time to get around.