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Spinal Fusion - when the right operation, done properly.

Fusion is not the default for back pain. It is the right operation for instability, spondylolisthesis, scoliosis and failed prior surgery. A consultant spinal surgeon, motion-preserving options considered first, and a full recovery plan.

See indicative pricing
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Indicative pricing

What spinal fusion costs privately in the UK.

Indicative ranges across our spinal network.

In short

£22,000–£38,000, 2–4 nights in hospital.

Procedure Indicative range
Consultant spinal surgeon consultation £300–£500
MRI + dynamic X-rays £600–£1,100
Single-level lumbar fusion (TLIF/PLIF) £22,000–£38,000
Anterior lumbar fusion (ALIF) £24,000–£42,000
Lateral lumbar fusion (XLIF/OLIF) £25,000–£42,000
Multi-level lumbar fusion £38,000–£75,000
Scoliosis / deformity correction £65,000–£140,000

Prices vary by hospital, by consultant, by number of levels and by implant cost (cages, screws, biologics). Multi-level fusion and complex deformity correction sit at the top of the range.

The problem

The right diagnosis, the right level, the right operation.

Fusion is overused for isolated back pain and underused for genuine instability. We fix both errors before you consent.

  • Instability, not just back pain

    MRI plus dynamic X-rays - flexion and extension - to prove instability before recommending fusion.

  • Motion-preserving first

    Decompression alone, microdiscectomy, or disc replacement where possible. Fusion is the final tool, not the first.

  • Adjacent-level disease is real

    Fusing one level increases load on the neighbours. We plan around it - and consider disc replacement where suitable.

When it helps

When fusion is the right step.

The situations we see most, plus the honest situation where fusion is not the answer.

  • Spondylolisthesis with symptoms

    A slipped vertebra causing back and/or leg pain, particularly with instability on dynamic X-rays.

  • Scoliosis with progression or pain

    Adult degenerative scoliosis with pain, disability or progressive curve. Deformity correction with fusion.

  • Trauma with instability

    Vertebral fracture with instability. Fusion stabilises to prevent neurological deterioration.

  • Failed prior decompression

    Instability that has developed after decompression alone - revision with fusion.

  • Tumour or infection needing reconstruction

    After spinal tumour excision or discitis, fusion may be needed to reconstruct stability.

  • Severe DDD with proven instability

    Rare, selected cases where degenerative disc disease is demonstrably unstable and non-operative treatment has failed.

  • Cervical myelopathy with kyphosis

    Cervical spinal cord compression with kyphotic deformity needing correction and stabilisation.

  • When fusion is NOT the answer

    Isolated axial back pain without radiological instability rarely improves with fusion. We say so honestly and explore other routes.

Techniques

Posterior, anterior, lateral, transforaminal - the approach fits the level.

What each approach involves - incision, technique, and which pathology it fits.

  • Posterolateral fusion (PLF)

    Bone graft laid alongside decorticated transverse processes and secured with pedicle screws. The classic technique.

  • Transforaminal lumbar interbody fusion (TLIF)

    Approach through the intervertebral foramen, cage inserted into the disc space plus posterior instrumentation. Workhorse for single-level fusion.

  • Posterior lumbar interbody fusion (PLIF)

    Bilateral posterior approach with two cages in the disc space. Older technique, still used in some situations.

  • Anterior lumbar interbody fusion (ALIF)

    Anterior abdominal approach directly onto the disc. Excellent for L5/S1 and where anterior column restoration is needed.

  • Lateral lumbar interbody fusion (XLIF/OLIF)

    Side approach through the psoas - muscle-sparing, single-level or multi-level. Good for L2–L4.

  • Anterior cervical discectomy and fusion (ACDF)

    Anterior neck approach - disc removed, cord decompressed, cage and plate for fusion. The standard cervical fusion.

  • Posterior cervical fusion

    For multi-level cervical myelopathy or fixed kyphosis. Lateral mass or pedicle screws with rods.

  • Deformity correction

    Multi-level fusion with osteotomies to correct scoliosis or kyphosis. Highest complexity, longest recovery, biggest life impact for the right patients.

Safety and recovery

What to expect afterwards - honestly.

Fusion is bigger surgery than decompression alone. What we plan around: bleeding, dural tear, hardware issues, non-union and adjacent-level disease.

  • Bigger surgery than decompression alone

    Longer operation, more blood loss (though usually not enough for transfusion), longer stay, longer recovery.

  • Dural tear happens

    1–5% depending on approach and revision status. Almost all repaired at the time.

  • Screw misplacement is uncommon

    With intra-operative imaging, screw misplacement causing nerve injury is well under 1%.

  • Non-union (pseudarthrosis)

    5–15% depending on levels, technique and patient factors. Smoking, obesity and diabetes increase risk substantially.

  • Adjacent-level disease

    The neighbouring level bears more load after fusion. 20–30% show radiological adjacent-level change at 10 years; symptomatic disease in a minority.

  • Infection

    Under 2% for elective single-level fusion; higher in revision and long deformity cases. Prompt washout and antibiotics if it occurs.

  • Bleeding and transfusion

    Multi-level and deformity surgery can need cell salvage or transfusion. Rare in single-level.

  • Hardware pain

    Some patients feel screws or rods and, once fusion is solid, hardware can be removed if it is genuinely the pain source.

  • Red flags after surgery

    New weakness, bladder change, spreading redness, fever, severe unrelieved pain or breathlessness need same-day review.

Reading your notes

Your operation note in four parts. Read the last one first.

Whatever the approach, the fusion note keeps to the same shape.

A UK consultant spinal surgeon reviewing a fusion operation note

A quiet reminder

Clinical language is precise - ask your care team to explain it if anything is unclear.

Ask your care team to explain anything that is unclear.

  1. 01 Header

    Indication, levels and approach

    Why fusion, which levels, which approach used.

  2. 02 Technique

    Instrumentation and biologics

    Screws, rods, cages, bone graft and biologics used. Intra-operative imaging findings.

  3. 03 Findings

    Intra-op findings and adjuncts

    Instability confirmed, decompression performed, any incidental pathology.

  4. 04 Plan

    Rehab, brace, X-ray schedule

    Read this first: mobilisation, brace instructions (if any), driving and return-to-work timing, X-ray schedule to confirm union.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Spinal fusion is usually covered when medically indicated for instability, spondylolisthesis, scoliosis or trauma. Fusion for isolated axial back pain is often not covered without documented instability.

Frequently asked

Everything patients ask about spinal fusion.

Quick answers on when fusion helps, recovery, hardware and adjacent-level disease.

  • Is spinal fusion the right operation for my back pain?

    For pure axial back pain without radiological instability, honestly usually no. Fusion works best for instability, spondylolisthesis, scoliosis and failed prior surgery - where it addresses a specific mechanical problem. We are open about this in every consultation, and often recommend continuing physio, injections or a decompression-only operation instead.

  • What is the difference between TLIF, PLIF, ALIF and XLIF?

    They are different approaches to the same goal - fusing two vertebrae with a cage and screws. TLIF and PLIF are posterior, ALIF is anterior (through the abdomen), and XLIF is lateral (through the flank). The approach depends on which level is being operated on, what needs to be decompressed, and previous surgery.

  • How much does spinal fusion cost privately in the UK?

    Single-level lumbar fusion runs £22,000–£38,000, multi-level £38,000–£75,000, and scoliosis correction £65,000–£140,000. Cervical fusion (ACDF) runs £13,000–£22,000.

  • How long is recovery after lumbar fusion?

    Most patients stay 2–4 nights in hospital, are off strong painkillers within 2–3 weeks, back to office work in 6–12 weeks, and to full activity in 3–6 months. Bone union takes 6–12 months on X-ray. Structured physiotherapy is essential, and smoking prevents union - non-negotiable.

  • What is adjacent-level disease and should I worry about it?

    When you fuse two vertebrae, the neighbouring levels bear more mechanical load. About 20–30% show radiological adjacent-level change at 10 years, but only a minority develop symptoms needing further treatment. It is one reason motion-preserving techniques (like disc replacement) are chosen where possible.

  • Will I set off airport metal detectors?

    Modern implants (titanium) rarely set off airport detectors, though enhanced scanners may pick them up. A wallet-sized implant card is standard - we issue one at discharge. MRI is safe with modern implants; specific device details are in your operation note.

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