Hello, I am 44 years old and had back surgery 14 months ago. I had a herniation at L4-L5 but my surgery did not involve fusing the disks. They just shaved off the offending portion of the disc and freed the sciatic nerve which was severly compressed. I felt better immediately after surgery. I had my surgery in November '07. I did 6 weeks of PT and started a walking regimen immediately after surgery. When I began riding again in May '07 (I don't ride in the winter, no indoor) I had no