I had microdiscectomy for L5S1 on 1/5/2012. I had back pain in in back and numbness in left leg and foot. other people told me that the numbness was gone when they came to after their surgery. Not in my case and over 4 months later it continues on the left leg and foot and now feeling numbness in the right leg and foot after occupational PT. Started felling jolt in back and legs a few weeks after PT started. Then got a jolt a couple of weeks ago that went down both legs. couldn’t sleep until I took my Hydrocodon at 3 AM. That’s when the right back, leg and foot issues started and are getting worse. Like you, I was on Gabapentin which only seemed to make the sensation in my leg and foot change more quickly but never go away. Went to doctor today and am being sent for an MRI and nerve testing. It’s frustrating as you know. I’ve been out of work as well. Boring and depressing. WC nurses, doctor, and PT people say the nerve issues can go on for a long time. Its all new to me so I’m trying to have faith in what they tell me. I will try to update after the MRI and nerve test. My guess is, by the way the right side feels, is that something is wrong on that side now. Hitting 50 has sucked.