Has anyone out there tried these sneakers? I am 4 months post-op and was prescribed by doc to walk 2 miles a day. By the time I get 1/2 mile my back and legs are killing me due to significate nerve damage in legs and my sneakers suck!!! Im wondering if these would help minimize the pain while walking. They look very comforable but to do not want to spend the money on another pair that's not going to support my back.Any opinions would be greatly appriciated.