Gosh, I've had a fusion at that level, and didn't know it could cause problems with walking? Or in the legs? My right arm was the problem for me. It became almost useless. I could't even sign my name. I had pain, numbness, and couldn't control it. After the fusion, and several months of therapy I can use my arm and hand almost normally. I have some nerve damage, but not enough to keep me from using it anymore. I hope it gets better for you.