The previous incision is reopened. Scar tissue is carefully dissected to identify the neural structures. Depending on the indication, the surgeon may remove a recurrent disc herniation, decompress new stenosis, revise or extend a fusion, or remove and replace failed hardware. The operation takes one and a half to four hours depending on complexity.
Revision surgery is considered for recurrent disc herniation, restenosis causing new symptoms, pseudarthrosis (failed fusion), adjacent segment disease, hardware failure, or persistent symptoms with an identifiable surgical cause.
Pain management, physiotherapy, epidural injections, and activity modification. The decision to reoperate requires careful patient selection — the cause of ongoing symptoms must be clearly identified.
Updated MRI and CT scans. Diagnostic injections may help identify the pain source. Thorough discussion of expectations.
Success rates for revision surgery are generally lower than primary surgery. Carefully selected patients — those with a clear structural cause identified on imaging — have the best outcomes.
Dural tearCommon
Higher risk in revision surgery due to scar tissue. Approximately 5-15%.
Blood lossCommon
More bleeding from scar tissue.
Persistent symptomsCommon
Outcomes are less predictable than primary surgery.
Nerve injuryUncommon
Increased risk due to scar tissue around nerves.
InfectionUncommon
Higher risk than primary surgery, approximately 3-5%.
InstabilityUncommon
Further bone removal may cause instability requiring fusion.
Epidural fibrosisCommon
Further scar formation around the nerves.
Cauda equina syndromeRare
Rare but serious.
General anaesthesia. Longer operating time than primary surgery.
Recovery is generally slower than after primary surgery. Hospital stay one to three days. Walking encouraged immediately. Return to desk work at four to eight weeks. Full recovery three to twelve months.
Regular follow-up at two weeks, six weeks, three months, and six months.
Why are results less predictable?
Scar tissue, altered anatomy, and the underlying degenerative process make revision surgery more challenging. Patient selection is critical — clear identification of the pain source improves outcomes.
How many revision surgeries can be done?
Each revision becomes progressively more complex. The decision to reoperate must be carefully considered each time, with clear evidence of a correctable structural problem.