I've had surgery on my L5-S1 disc twice now, but recently, along with the usual sciatica behind my right leg, tingling in my right thigh has begun. I've had an MRI and a ct/myelogram and nothing major shows up. However, clumping of nerves showed up between L2 and L4. Does anyone know if these are the levels that cause the pain/tingling in the front thigh? I've never dealt with this before. It seems to be gradually getting worse recently.