Failed Back Surgery Syndrome
Failed Back Surgery Syndrome (FBSS) refers to persistent or recurring back and/or leg pain after spine surgery. It’s not a single diagnosis — it’s a signal that we need to identify what’s still driving symptoms and build a plan that improves function.
Common Patterns
- Persistent leg pain (sciatica-type symptoms)
- Ongoing low back pain
- Symptoms return after initial improvement
- Pain with standing or walking
What We Focus On
- Identify the pain generator(s)
- Match symptoms to imaging and exam
- Prioritize non-surgical options first
- Consider revision surgery only when it clearly makes sense
What Is Failed Back Surgery Syndrome?
Failed Back Surgery Syndrome is a term used when pain continues after spine surgery or returns after a period of relief. It does not automatically mean the surgery was “wrong” or that nothing can be done — it means the next step is identifying what’s still causing symptoms.
Some patients have a single pain driver (for example, recurrent nerve compression). Others have multiple drivers (like nerve irritation plus joint pain). The safest approach is to get specific about the cause before deciding on treatment.
Common Symptoms
Symptoms vary depending on the underlying cause. Many patients describe a mix of back pain and nerve-related leg pain.
Back Pain
- Persistent aching or sharp pain
- Pain near the surgical level or adjacent levels
- Worse with sitting, standing, or certain movements
Leg Pain / Nerve Symptoms
- Sciatica-type pain
- Numbness or tingling into the foot/toes
- Burning or “electric” pain patterns
Function Changes
- Reduced walking tolerance
- Sleep disruption
- Difficulty returning to work or normal activity
Why Symptoms Persist After Surgery
There are multiple reasons pain can continue after surgery. The goal is to determine what is most likely in your case.
Common Structural Causes
- Residual or recurrent nerve compression (re-herniation or incomplete decompression)
- Scar tissue (epidural fibrosis) irritating a nerve
- Adjacent level degeneration (new wear-and-tear above/below the surgical level)
- Instability or alignment problems
Other Common Pain Generators
- Facet joint pain
- SI joint pain
- Muscle deconditioning and altered mechanics
- Persistent nerve sensitivity after prolonged compression
Diagnosis: How We Figure Out What’s Driving Pain
A focused evaluation starts with your symptom timeline (before surgery → after surgery → now), the procedure you had, and a detailed physical exam. Imaging and diagnostic tools help confirm what’s contributing.
Clinical Exam
- Strength, reflex, and sensation testing
- Gait evaluation
- Provocation tests for nerve irritation
Imaging
- MRI (sometimes with contrast to help differentiate scar vs disc)
- X-rays (including flexion/extension when instability is suspected)
- CT in select cases (fusion/hardware detail)
Targeted Diagnostics
- Diagnostic injections (to identify a pain source)
- Selective nerve root blocks when appropriate
- Workup guided by symptom pattern
Treatment Options
Treatment depends on the cause. In many cases, the best results come from improving pain control and function without jumping straight to repeat surgery.
Rehab + Movement Plan
- Structured PT focused on core stability and mobility
- Activity modification without complete shutdown
- Gradual return-to-function strategy
Injections (If Appropriate)
- Epidural steroid injection for nerve inflammation
- Targeted joint injections for facet/SI pain
- Diagnostic value + symptom control
Revision Surgery (Selected Cases)
- Considered when there’s a clear fixable structural problem
- Recurrent compression, instability, or fusion/hardware issues
- Decision is based on symptoms + imaging match
Recovery and Next Steps
Recovery is individualized. The priority is getting you moving safely, improving tolerance for activity, and reducing flare-ups while we address the root cause.
Short-Term
- Reduce inflammation and calm nerve irritation
- Improve sleep and daily function
- Start structured movement plan
Mid-Term
- Rebuild strength and stability
- Address mobility limitations
- Increase walking/standing tolerance
Long-Term
- Prevent recurrence by improving mechanics
- Maintain spine-friendly activity routine
- Re-evaluate only if symptoms persist or worsen
Second Opinions for Persistent Post-Surgical Pain
If you’ve been told “nothing can be done,” a second opinion can still be valuable. The goal is to confirm diagnosis, review prior imaging and surgical history, and identify options that fit your situation.
What to Bring
- Recent MRI/CT reports (and images if possible)
- Operative note (if available)
- List of treatments tried and response
- Timeline of symptoms before/after surgery
What You Should Get
- A clear explanation of what’s driving symptoms
- Non-surgical plan when appropriate
- Revision surgery discussion only when justified
- A realistic expectations conversation
FAQ
Does FBSS mean the surgery failed?
Not always. FBSS means symptoms persisted or returned. The cause can vary, and many cases can improve with targeted non-surgical treatment.
Can scar tissue cause pain after surgery?
Scar tissue can irritate nerves in some cases. Imaging and symptom patterns help determine if it’s likely contributing.
When is revision surgery considered?
Revision surgery is typically considered when imaging shows a fixable structural problem that clearly matches your symptoms (like recurrent compression or instability).
Can injections help after surgery?
Yes. Injections can reduce inflammation and, in some cases, help confirm the source of pain (nerve vs joint vs other).