| I have a similiar problem.
I work out on a Nordik Trak ski machine and after about 20 minutes, the ball of my right foot starts to go numb. I did break my ankle in 04' and the mobitlity that ankle is compromised. I have been using an ankle brace to help with the swelling, but I'm wondering if a different type of shoe would help? I think what I use not are crosstrainers. Would the type of motion on a ski machine be more like running, therefore making a true running shoe a better option? | 
