I had TLIF fusion In October of 2010. At my year check up in October 2011, neurosurgeron said that th x-ray and ct scan looked great and do as I want. I myself have sortof not over extented my back. My question: my lower left side from just above the butt (L45)+ down area hip, legs, knee to foot. It tingles, have pins and needles and at times if I step wrong feels like the rods/pins in my back sort of "lock-up" what could that be from. Should I go back to my GP, my NS or find an Ortopedic doc. now. I am taking 600 mg of ibuprofin 3x a day. It is helping but I am not so keen on what the stuff is doing to my stomach and liver. Any advise?