I had an L4/L5 posterior decompression and fusion with instrumentation procedure on Friday and am now home. The problem I have is that the pain I had previously - which the surgery is meant to cure - is now much worse. I told the surgeon about this and he arranged for a swift CT scan which he told me showed that everything is fine and all the bits are where they are meant to be! I have little or no pain from the site of the operation - I am on a cocktail of drugs (paracetamol, codeine, diazepam and gabapentin) - but the original nerve pain itself is bad. All is well when I am sitting or lying down but when I stand and walk it is excruciating at first and then lessens as I move about more. I know from reading elsewhere that this can occur, but I still find it very worrying, annoying and upsetting. I have an appointment to see the surgeon in two weeks, so let's hope things have eased off by then. I'd love to know if anyone else has had this issue and how it resolved. Many thanks in advance for your help and comments.