Orthopaedics · UK
Peroneal tendon surgery - the outer ankle, fixed properly.
Repair of split tears, stabilisation of snapping tendons, groove deepening and tendon transfer - by a consultant foot and ankle surgeon, with the imaging done first and a rehab plan that gets you back to sport.
Indicative pricing
What private peroneal tendon surgery costs in the UK.
Indicative ranges across our partner orthopaedic units.
In short
£5,000–£8,500, home the same day.
| Procedure | Indicative range | Typical duration | Stay |
|---|---|---|---|
| Peroneal tendon debridement and repair | £5,000–£8,500 | 60–90 min | Day-case |
| Repair with fibular groove deepening (for subluxation) | £6,000–£10,000 | 75–120 min | Day-case or 1 night |
| Retinaculum repair (stabilising dislocating tendons) | £5,500–£9,000 | 60–100 min | Day-case |
| Tenodesis or tendon transfer (irreparable tears) | £6,500–£11,000 | 90–150 min | Day-case or 1 night |
| Tendoscopy (keyhole tendon inspection and debridement) | £4,000–£6,500 | 45–75 min | Day-case |
| MRI ankle | £350–£700 | 20–40 min | Report in days |
| Foot & ankle consultation only | £200–£400 | 30–45 min | Same visit |
Prices vary by hospital, by the consultant, and by what the tendons need on the day - combined repair, groove deepening and alignment procedures are always the top of the range. On the NHS this surgery sits on routine orthopaedic waiting lists, commonly six months or more.
The problem
The right diagnosis, the whole hindfoot, and a rehab plan that finishes the job.
Outer-ankle pain is where orthopaedic care quietly under-delivers - mislabelled as “just a sprain”, alignment ignored, rehab abandoned at the boot. We fix all three before you consent.
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It is often not “just a sprain”
Split tears and subluxing tendons hide behind chronic sprains for years. MRI and dynamic ultrasound name the problem before anyone operates.
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Fix the cause, not only the tear
A high-arched heel that rolls inwards will re-injure a perfect repair. Alignment is assessed - and corrected where needed - as part of the plan.
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The operation is half the treatment
Outcomes are made in the months after theatre.
When it helps
When peroneal tendon surgery is the right step.
The situations we see most, plus the one presentation that should not wait its turn on a list.
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Persistent outer-ankle pain
Pain and swelling behind the outer ankle bone that has outlasted months of physiotherapy - the classic story of peroneal tendinopathy or a split tear.
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A split tear of peroneus brevis
The commonest structural finding on MRI - a lengthwise split in the tendon where it wraps around the fibula, debrided and repaired.
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Snapping or popping tendons
A visible or palpable snap over the outer ankle as the tendons dislocate from their groove - retinaculum repair, often with groove deepening.
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After a bad ankle sprain
A sprain that never fully settled - peroneal injuries hide behind many chronic sprains, and behind ongoing giving-way.
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Recurrent ankle instability
The peroneals are the ankle’s dynamic stabilisers. Tendon disease and instability often travel together, and are often fixed together.
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A high-arched (cavovarus) foot
A heel that rolls inwards overloads the peroneals. The alignment sometimes needs correcting too - or the repair fails.
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Runners, dancers and court-sport athletes
The people who load these tendons hardest - and who benefit most from a precise diagnosis and a staged return-to-sport plan.
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Red flag: sudden inability to push off, foot turning in
A sudden complete rupture - the foot drifting inwards and push-off power gone - deserves prompt specialist review, since delayed repair is harder surgery.
Procedure options
The operation depends on what the tendons need.
What each option involves - from a simple debridement to groove deepening, tenodesis and, where alignment demands it, a heel osteotomy alongside.
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Debridement and synovectomy
Inflamed tendon lining and degenerate tissue tidied away - the first-line surgery for tendinopathy without a major tear.
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Split-tear repair (tubularisation)
The split in peroneus brevis is excised and the tendon stitched back into a smooth tube - the workhorse operation.
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Retinaculum repair
The tissue roof holding the tendons behind the fibula is repaired and tightened - the fix for tendons that dislocate.
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Fibular groove deepening
The bony groove the tendons run in is deepened so they sit securely - added when the groove is shallow or subluxation recurs.
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Tenodesis
If more than half a tendon is unusable, the healthy portion is stitched to its neighbour so one strong tendon does the work of two.
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Tendon transfer or graft
For two irreparable tendons - an FHL transfer or allograft rebuilds function. Rare, and firmly the territory of a specialist.
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Tendoscopy
Keyhole inspection and debridement of the tendon sheath through two tiny portals - smaller scars, quicker recovery, for selected cases.
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Alignment correction (calcaneal osteotomy)
A heel-bone realignment added when a cavovarus foot keeps overloading the tendons - treating the cause, not just the damage.
Safety and recovery
What to expect afterwards - honestly.
Peroneal tendon surgery is reliable in specialist hands. The things worth planning are the diagnosis, the alignment, and the months of rehabilitation that make the result.
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Day-case, GA or spinal with a nerve block
Most cases are day surgery under general or spinal anaesthetic, with a nerve block that keeps the ankle comfortable for the first day. Someone must take you home.
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The recovery is the commitment
Two weeks in a splint, a boot to six weeks, physio for months. Outcomes are good - 80–90 percent return to previous activity - but the timeline is real and we say so.
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Sural nerve irritation
The nerve supplying the outer border of the foot runs close to the incision. Temporary numbness or tingling is relatively common; permanent symptoms are uncommon.
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Infection and wound healing
Wound problems occur in 1–3 percent - higher in smokers and diabetes. Keep the wound dry until the two-week check and call the same day about spreading redness.
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DVT prophylaxis
Immobilisation raises clot risk. Most patients get blood-thinning injections or tablets while in the boot - calf pain or breathlessness needs same-day review.
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Stiffness and swelling linger
Ankle swelling by evening is normal for months after tendon surgery. Elevation, calf pumps and graded loading are the fix - not rest.
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Re-tear and recurrence
Repairs can fail and subluxation can recur, particularly if alignment problems were left unaddressed - one reason the work-up covers the whole hindfoot.
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CRPS is rare but real
Complex regional pain syndrome - an outsized pain response after foot and ankle surgery - is rare, but early recognition and physiotherapy matter.
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Red flags after surgery
Calf pain or swelling, breathlessness, fever, spreading redness or pain not controlled by the plan need the same-day team or A&E, not a routine call.
Reading your operation note
Your operation note in four parts. Read the last one first.
Whatever combination was done - debridement, repair, groove deepening - the note the surgeon sends you keeps to the same shape.
A quiet reminder
Surgical language is precise and can read coldly - we translate it for you.
If you would like us to talk you through the operation note and the rehab milestones before your review, just ask.
- 01 Header
Diagnosis, side and procedures performed
Which tendon was affected - brevis, longus or both - and exactly what was done: debridement, repair, groove deepening, retinaculum repair, transfer.
- 02 Technique
Findings at surgery
The state of each tendon, the size of any split tear, the depth of the groove, and the quality of the retinaculum - the detail that predicts recovery.
- 03 Findings
Fixation and stability testing
Sutures and anchors used, how the tendons tracked through range of movement on the table, and any alignment procedures added.
- 04 Impression
Weight-bearing plan and rehab milestones
Read this first: when the splint changes to a boot, when weight goes through the foot, when physio starts, and the target dates for driving, work and sport.
Recognised by major UK insurers
Peroneal tendon surgery is usually covered when imaging confirms the diagnosis and conservative care has been tried.
Frequently asked
Everything we get asked about peroneal tendon surgery.
Quick answers on tears, subluxation, cost, recovery and getting back to sport.
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What are the peroneal tendons and what goes wrong with them?
The peroneal tendons - peroneus brevis and longus - run behind the outer ankle bone and pull the foot outwards, stabilising the ankle. They can become inflamed (tendinopathy), develop lengthwise split tears, or dislocate from their groove (subluxation), usually after ankle sprains or repetitive loading in sport. The result is persistent outer-ankle pain, swelling, snapping or instability.
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Do peroneal tendon tears heal without surgery?
Tendinopathy and minor tears often settle with physiotherapy, activity modification, orthotics and occasionally an immobilising boot - and that is the right first step for most people. Established split tears and dislocating tendons rarely heal structurally on their own, so surgery is recommended when a proper course of conservative care has failed or the tendons are frankly unstable.
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What does the operation involve?
Through an incision behind the outer ankle bone, the surgeon opens the tendon sheath, removes inflamed and degenerate tissue, repairs split tears by stitching the tendon back into a tube, and stabilises dislocating tendons by repairing the retinaculum and deepening the bony groove where needed. If a tendon is beyond repair, the healthy part is joined to its neighbour or a transfer is performed. Most cases take 60–120 minutes as day surgery.
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How long is recovery after peroneal tendon surgery?
Expect around 2 weeks in a splint, then a walking boot with progressive weight-bearing to 6 weeks, physiotherapy from 6–8 weeks, a return to running from about 3 months and to pivoting sport at 4–6 months. Desk work is realistic at 2–3 weeks with the leg elevated; standing jobs take 6–10 weeks. Swelling by the evening commonly persists for 6–12 months.
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How much does private peroneal tendon surgery cost in the UK?
Roughly £5,000–£8,500 for a debridement and repair, £6,000–£10,000 where the fibular groove is deepened for subluxation, £6,500–£11,000 for tenodesis or tendon transfer, and £4,000–£6,500 for a keyhole tendoscopy. An ankle MRI adds £350–£700.
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Will I get back to sport?
Most people do - around 80–90 percent return to their previous level of activity after repair of a split tear or stabilisation of subluxing tendons, provided rehabilitation is completed properly. Outcomes are less predictable when both tendons were badly damaged or a transfer was needed, and honest counselling on that comes before consent, not after.
Related treatments
Looking for something else?
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MRI scan
The imaging that confirms tendon tears.
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Ankle ligament reconstruction
For chronic lateral ankle instability.
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Achilles tendon surgery
Repair and reconstruction of the Achilles.
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Ankle arthroscopy
Keyhole surgery inside the ankle joint.
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Physiotherapy
Rehabilitation before and after surgery.
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All tests & procedures
Every test and procedure we cover.
Learn more