T5/6 incomplete walking in walker:

I have impaired sensation waist down so I cant feel that well..So my reactions to pain is high flexural cynergy I had an ingrown left toe nail that was painful so when i flexed my left ankle during walkin my left hip flexors raised my leg unexpectently and I fell..so this is my indicator that there is pain in feet or legs. My question is has anyone else experienced this phenomenom? How do you know if your shoes are hurting..hate to buy shoes that hurt but I cant tell unless high flexural cynergy...