I had a TLIF 5 weeks ago and seen my surgeon today. I am suppose to put the patches on the very sensitive areas of my foot. It is a type of anestetic to help the pain and sensitivity. Mine hurts so bad I cant wear shoes and they burn. Cant touch it or blankets nothing. I am going to start lyrica and use the patch on my foot areas. I went and read your post. I see that your on neurotin. When did your sensitivity start? mine started with burning pain in my feet around 3.5 weeks post op.