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Private lumbosacral plexus surgery in the UK, by a peripheral nerve surgeon.

The nerve network supplying the leg sits deep in the pelvis, and injury to it is uncommon, hard to diagnose and easy to mismanage. Timing is everything - nerve repair and transfer work far better within months than after a year.

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

Indicative pricing

What private lumbosacral plexus surgery costs in the UK.

Indicative ranges across our partner peripheral nerve units.

In short

Nerve grafting or transfer: £16,000–£28,000, with 5–7 nights in hospital.

Procedure Indicative range
Peripheral nerve surgeon consultation £350–£600
MRI neurography of the plexus £900–£1,600
Nerve conduction studies + EMG £500–£900
Neurolysis / plexus exploration £12,000–£20,000
Nerve grafting or nerve transfer £16,000–£28,000
Plexus tumour excision £14,000–£26,000

Surgery is only part of the cost - months of physiotherapy, orthotics and pain management follow, and recovery is measured in years rather than weeks. Complex nerve injury is concentrated in a small number of NHS peripheral nerve injury units, and where the injury is recent that referral is often the fastest and best route.

The problem

The hard part is diagnosis, and the enemy is delay.

Lumbosacral plexus injury is often mistaken for a lumbar disc problem, sciatica or a hip issue for months. By the time the diagnosis is made, the window in which nerve reconstruction works well may have narrowed considerably.

  • Foot drop or weakness after pelvic surgery?

    Iatrogenic plexus injury needs early assessment. Waiting to see whether it recovers is reasonable for weeks, not for a year.

  • Been treated for sciatica with no improvement?

    A pattern of weakness that does not match a single nerve root, with normal lumbar MRI, should prompt MRI neurography of the plexus.

  • Told it is too late?

    Where nerve reconstruction is no longer viable, tendon transfer, orthotics and arthrodesis can still restore useful function. That deserves proper assessment.

When it helps

When plexus surgery is the right step.

The injuries and lesions that surgery can help, the ones that recover without it, and the presentation that means an emergency.

  • Traumatic plexus injury

    Pelvic fracture, sacral fracture or penetrating injury damaging the plexus. Early assessment establishes whether nerves are stretched, ruptured or avulsed from the cord.

  • Iatrogenic injury after surgery

    Injury during hip arthroplasty, pelvic or gynaecological surgery, or from prolonged lithotomy positioning. Recognised early, some are recoverable; recognised late, fewer are.

  • Compressive haematoma

    A retroperitoneal or psoas haematoma, often on anticoagulation, compressing the plexus. Urgent decompression can produce excellent recovery if done early.

  • Plexus tumours

    Schwannoma, neurofibroma and, rarely, malignant peripheral nerve sheath tumours. Excision with intraoperative nerve monitoring preserves function where possible.

  • Endometriosis involving the plexus

    Deep infiltrating endometriosis can involve the sacral plexus and sciatic nerve, causing cyclical leg pain and weakness. It needs combined gynaecological and nerve surgery.

  • Radiation plexopathy

    A late effect of pelvic radiotherapy, usually progressive. Neurolysis is occasionally offered, but results are limited and expectations must be set carefully.

  • Failed recovery after conservative management

    Where serial EMG shows no reinnervation at three to six months, the case for surgical exploration strengthens considerably.

  • Red flag: rapid weakness, bladder or bowel change

    Rapidly progressive leg weakness, numbness in the saddle area, or new bladder or bowel dysfunction is a surgical emergency - cauda equina must be excluded within hours.

Surgical options

What can be done depends on what is found.

What each reconstruction involves - and which injury pattern it suits.

  • External and internal neurolysis

    Freeing the nerve from surrounding scar tissue, and where needed separating scarred fascicles within the nerve. Used where the nerve is compressed or tethered but still conducting.

  • Decompression of a compressive lesion

    Evacuating a haematoma, removing a mass or releasing a fibrous band. Where done early, recovery can be excellent because the nerve itself was never divided.

  • Nerve grafting

    A non-conducting segment is excised and bridged with sural nerve grafts or processed allograft. Regeneration then proceeds at about a millimetre a day towards the target muscle.

  • Nerve transfer

    A functioning but less critical donor nerve is rerouted to restore an important function. Because the repair is close to the target muscle, reinnervation is faster and more reliable than long grafts.

  • Direct nerve repair

    Where a nerve has been cleanly divided and the ends can be brought together without tension - usually only in sharp, recent injuries.

  • Plexus tumour excision

    Removal of schwannomas and neurofibromas with intraoperative nerve stimulation and monitoring, aiming to preserve the fascicles that carry function.

  • Tendon transfer and arthrodesis

    Where nerve reconstruction is not viable, a working muscle is rerouted to replace a paralysed one, or a joint is fused for stability. Reliable, and often life-changing for foot drop.

  • Conservative management and orthotics

    Many stretch injuries recover spontaneously over months. Serial EMG, physiotherapy and an ankle-foot orthosis manage the interim without closing surgical options.

Safety and recovery

What recovery really looks like.

Nerve surgery asks for patience on a scale few other operations do. Regeneration is slow, results are partial more often than complete, and honest expectation-setting is as important as the surgery itself.

  • Recovery takes months to years

    Nerve regenerates at roughly one millimetre a day. A graft in the pelvis reaching a muscle in the leg may take a year or more before any movement appears.

  • Timing determines what is possible

    Muscle that has been denervated for eighteen to twenty-four months becomes irreversibly fibrotic. After that, no amount of nerve regeneration will restore it - only tendon transfer can help.

  • Results are usually partial

    The realistic goal is useful function rather than normality. Restoring the ability to stabilise a knee or clear a foot changes life considerably, even if power never returns fully.

  • Neuropathic pain

    Burning, shooting nerve pain is common both before and after surgery, and does not always improve with reconstruction. Early involvement of a pain specialist matters.

  • Donor site effects of nerve grafting

    Sural nerve harvest leaves permanent numbness along the outer foot and ankle. Nerve transfer trades a less critical function for a more important one, which is discussed explicitly.

  • Surgical risks of the approach

    Retroperitoneal and transabdominal approaches carry risks to the ureter, bowel and major vessels. This is major surgery in a crowded space, which is why unit experience matters.

  • Worsening before improving

    Neurolysis and exploration can temporarily worsen symptoms as the nerve recovers from handling. It usually settles over weeks but is disconcerting if unexpected.

  • Rehabilitation is the other half

    Physiotherapy, orthotics and, once reinnervation begins, motor re-education determine how much of the recovered nerve function translates into usable movement.

  • Red flags at any point

    Rapidly progressive weakness, saddle numbness, new bladder or bowel dysfunction, fever, or a swollen painful leg - emergency assessment the same day.

Reading your operation note

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

Whether the surgery was a neurolysis, a graft, a transfer or a tumour excision, the note your surgeon writes keeps to the same shape.

A UK consultant peripheral nerve surgeon reviewing MRI neurography and operation notes with a patient

A quiet reminder

Nerve surgery language is precise and can read coldly - we translate it for you.

If you would like us to talk you through the note before your review, just ask.

  1. 01 Header

    Injury, timing and deficit

    The mechanism and date of injury, which roots and trunks are involved, the clinical deficit, and the imaging and EMG findings that led to surgery.

  2. 02 Technique

    Approach and reconstruction

    The surgical approach used, what was found on exposure, which nerves were stimulated and recorded, and whether neurolysis, grafting, transfer or excision was performed.

  3. 03 Findings

    Intraoperative neurophysiology

    Which fascicles conducted and which did not, graft lengths and donor nerves used, and any histology sent where a tumour was involved.

  4. 04 Impression

    Expected recovery and rehabilitation

    Read this first: a realistic timeline for reinnervation, which functions are expected to return, the physiotherapy and orthotic plan, and when EMG will be repeated.

Recognised by major UK insurers

BupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealixBupaAXA HealthVitalityAvivaWPACignaHealix

Cover for nerve surgery is usually funded when medically indicated following an acute covered injury, but long rehabilitation, orthotics and chronic neuropathic pain management are frequently limited. Where the injury arose from previous surgery, some policies treat it as a complication of a pre-existing condition.

Frequently asked

Everything we get asked about lumbosacral plexus surgery.

Quick answers on timing, how much function returns, what nerve transfer means, and what happens when reconstruction is no longer possible.

  • How quickly do I need to be seen?

    Sooner than most people are. Nerve reconstruction works best within three to six months of injury, and muscle denervated for more than eighteen to twenty-four months becomes irreversibly fibrotic. That does not mean rushing to surgery - many stretch injuries recover spontaneously - but it does mean specialist assessment and serial EMG should start early rather than after a year of watching.

  • How much function will come back?

    The honest answer is usually partial rather than complete. Outcome depends on the type of injury, how far the nerve must regenerate, how long the muscle has been denervated and your age. Restoring useful function - stabilising a knee, clearing a foot, regaining protective sensation - is a realistic and worthwhile goal even where full power does not return.

  • How much does plexus surgery cost in the UK?

    Neurolysis or exploration runs £12,000–£20,000, nerve grafting or transfer £16,000–£28,000, and plexus tumour excision £14,000–£26,000. MRI neurography adds £900–£1,600 and neurophysiology £500–£900. Rehabilitation over the following year sits on top.

  • What is a nerve transfer and why is it better than a graft?

    A nerve transfer takes a functioning but expendable donor nerve and reroutes it directly to a nerve controlling an important muscle. Because the repair is made close to the target muscle, regeneration distance is short and reinnervation is faster and more reliable than a long graft from the pelvis. The trade-off is losing the donor nerve's original, less critical function.

  • How is this different from a lumbar disc problem?

    Both cause leg pain and weakness, which is why plexus injury is so often mistaken for sciatica. The distinction lies in the pattern - plexus injury produces weakness crossing more than one nerve root distribution, often with a normal lumbar MRI. MRI neurography of the plexus and careful EMG settle it.

  • Will surgery help my nerve pain?

    Sometimes, but it should not be the main reason for operating. Decompressing a trapped or scarred nerve can relieve pain considerably. Where pain arises from a damaged nerve itself, reconstruction may not change it, and neuropathic pain medication, pain specialist input and sometimes neuromodulation are the more effective route.

  • What if it is too late for nerve reconstruction?

    A great deal can still be done. Tendon transfer reroutes a working muscle to replace a paralysed one - a tibialis posterior transfer for foot drop, for example, is reliable and life-changing. Joint fusion provides stability where muscles cannot, and modern orthotics restore a remarkable amount of walking function.

  • Why do I need repeated EMG tests?

    Because a single study cannot distinguish a nerve that is recovering slowly from one that will never recover. Serial studies at intervals show whether reinnervation is progressing. If it is, surgery may be unnecessary; if it is not, that is the signal to explore before the window closes.

  • Should this be done on the NHS?

    Complex peripheral nerve injury is concentrated in a small number of NHS units with genuine expertise, and for recent injuries that referral is often the fastest and best route. Private care is most useful for rapid assessment when a referral is drifting, for second opinions, and for choosing a particular surgeon - but the specialists are frequently the same people.

  • When should I seek emergency help?

    Rapidly progressive leg weakness, numbness in the saddle area, or new bladder or bowel dysfunction needs assessment within hours to exclude cauda equina syndrome. After surgery, fever, a swollen painful leg, or sudden loss of function that had returned all need same-day assessment.

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