Early last year was hit head on by a drunk driver. Broke my back in several places. The worst was that I disintegrated a disc and vertebrae. The 3rd vertebrae and disc were removed and bone fragment in spinal canal. Rods and screws hold my spine up now. The operation took about three hours and I was up walking the next day. I stopped taking medication a month after. Tremedol and a muscle relaxer made me fell sick all the time. So I just stop taking them. If I told the long version of this story you would not believe it. Does anyone know if these screws have to eventually come out and be replaced with plastic or new screws?