Back or leg pain that continues, or returns, after spine surgery. The first step is finding out why; the right treatment depends entirely on the cause.
Failed back surgery syndrome is the term for persistent or recurrent back and/or leg pain after one or more spine operations. It is common, and it is not a single problem, there are several possible reasons, and treatment only works when it is matched to the right one.
Common causes include a disc that re-herniates, scar tissue forming around the nerves, narrowing at the operated level or a neighboring one, instability of the spine, incomplete relief of the original compression, or inflammation of the nerve roots. Pain that has become "neuropathic", driven by the nerves themselves rather than by ongoing pressure, behaves differently and often needs a different approach. Sleep, mood, and other factors also genuinely shape the experience of the pain.
The most important step is a careful re-evaluation with up-to-date imaging, because it answers the key question: is there a clear, correctable structural problem, or is the pain mainly neuropathic with no surgical target? More surgery helps the first group and tends to disappoint the second, so the two are treated very differently.