Do you wear an orthotic brace? I think I would look at going clipless. A car wreck left me with a slightly mangled right leg and I'm using some Shimano mt-52 mountain bike shoes and spd clipless pedals. The shoes look like high top sneakers and give my bad foot a lot of support/stability. I just leave my right foot clipped in when stopping and put my left foot down. This is a new setup for me and so far I've not had any problems. Works better for me than using toe clips, YMMV.