I am a 63 yr. old, basically healthy woman. I had a TDR S-1 L-5 on 8/27. I am reaching out because I was not having problems walking for first five days. Now I need assistance or at least my husband hovering. I get the kind of spasms that feel like electrical shock hitting my spine when I walk and move ever so slightly off course or balance. Even sometimes when I feel perfectly balanced! It completely freaks me out because I have almost collapsed to the floor twice. I need to find out if anyone has this similar and very frightening experience? I understand the angry nerves! Wow!