Flatfoot Reconstruction

Flatfoot reconstruction is a group of operations that restore the shape and balance of an adult foot whose arch has dropped and whose heel has tipped outward. It is most often done when the tendon that holds the arch up has worn out. Surgery usually takes about 150 minutes and combines bone cuts with a tendon transfer.

What is flatfoot reconstruction?

Every foot has an arch that is held up by bones, ligaments and one important tendon, the posterior tibial tendon, which runs behind the inner ankle bone and under the arch. When that tendon stretches, tears or simply stops working, the arch sinks and the heel drifts outward. Doctors call this adult acquired flatfoot deformity.

Flatfoot reconstruction rebuilds that structure. Rather than patching one tendon, the surgeon corrects the whole alignment: the heel is shifted back under the leg, the outer side of the foot may be lengthened, a nearby tendon is borrowed to replace the failing one, and a tight calf is released. The result is a foot that carries weight more evenly.

What problems does flatfoot reconstruction treat?

The operation treats pain and instability along the inner ankle, a foot that tires quickly, and a visibly collapsed arch with a heel that rolls outward. Many patients also have pain on the outer side of the ankle, where the heel bone starts to bump against the fibula. You can read the condition background on our flat feet and adult acquired flatfoot page.

It is not intended for the flat feet that most people have without symptoms. A flat arch that does not hurt, does not change and does not limit walking needs no surgery. Reconstruction is reserved for feet that are painful, progressively worse or unable to cope with shoes and braces.

How does flatfoot reconstruction work?

Think of the foot as a tripod made of the heel, the big toe side and the little toe side. In a collapsed foot the tripod has tilted. The surgeon first decides whether the joints are still flexible or already stiff. Flexible feet keep their joints and are rebalanced with bone cuts and tendon transfers.

Stiff feet, which can no longer be passively corrected, usually need one or more joints fused so that they stay in a good position. This is a bigger operation with a longer recovery, but it can be very reliable for pain. The choice between preserving and fusing joints is the central decision in flatfoot reconstruction.

Is flatfoot reconstruction major surgery?

Yes. It is among the larger planned operations in foot and ankle surgery, because it often combines several procedures in one sitting and needs a long period without weight on the foot. Even so, it is routine for experienced foot and ankle teams, and most patients go home after 2 nights.

The real demand is on the months afterwards. Expect about 6 weeks of crutches or a knee scooter, a boot after that, and many weeks of physiotherapy. Planning your home, work and travel around that timetable is as important as the operation itself. See our foot and ankle hub for related conditions.

How common is the problem and who is affected?

Posterior tibial tendon failure is the most common cause of an acquired flatfoot in adults. It is seen mainly in women over 40 or 50, and it is more likely with higher body weight, high blood pressure, diabetes, inflammatory arthritis and previous foot injuries. Steroid injections near the tendon may also weaken it.

Only a minority of people with an early problem need an operation, because rest, bracing and exercises settle many cases. Surgeons see the patients in whom those measures have not worked, or in whom the deformity has already become rigid.

What are the main benefits and trade-offs?

The benefits are less pain, a steadier heel, a foot that can push off more strongly and a lower chance of the ankle itself wearing out from years of tilt. The trade-offs are a long recovery, the chance of stiffness in some of the hindfoot joints and a scar or two that may stay tender for months.

Patients who understand the trade-offs usually do best. The aim is a comfortable, functional foot that can manage walking, work and gentle sport. A foot that looks identical to a never-flat foot is rarely achievable, and expecting it often leads to disappointment.

Who should think twice about this surgery?

People with poor blood supply to the foot, an active infection, nerve loss from diabetes, uncontrolled blood sugar or a heavy smoking habit should discuss the risks carefully, because wounds and bones may heal slowly. Anyone who cannot keep weight off the foot for about 6 weeks needs a realistic support plan first.

Flatfoot reconstruction is not an emergency operation. A sudden tendon rupture with a swollen, painful inner ankle needs prompt local assessment. Treatment abroad is intended for stable patients with planned surgery, and we explain how that works on our flatfoot reconstruction in turkey page.

Preparation for flatfoot reconstruction means confirming the stage of deformity with standing imaging, getting medically fit, stopping nicotine, and arranging your home for about 6 weeks without weight on the foot. Planning ahead has a visible effect on comfort and healing during the first weeks after surgery.

Which tests and scans are needed before flatfoot reconstruction?

You will usually need weight-bearing X-rays of the foot and ankle, taken standing, because a foot lying down looks very different. They show the arch height, the heel angle and any ankle tilt. Hindfoot alignment views and sometimes a CT scan give extra detail of the joints.

MRI or ultrasound examines the posterior tibial tendon, the spring ligament and the ankle ligaments. A blood test, heart tracing for older patients and a medicines review are standard. Diabetes control and vitamin D level may be checked, because both influence healing.

How do I prepare my health for surgery?

Stopping smoking and nicotine replacement for at least 6 weeks before and until the bones heal is the single most useful step. Blood sugar should be well controlled, and anaemia treated. Your doctor may ask you to pause blood thinners or anti-inflammatory tablets, but never stop a prescribed medicine without advice.

Weight loss, where appropriate, reduces load on the repair. Strengthening the opposite leg and practising crutch or knee scooter use before surgery makes the first weeks safer. Tell the team about any previous foot infections, skin conditions or allergies.

What should I arrange at home and at work?

Plan for a single level where possible, a stool or chair in the shower, and a firm seat for raising the leg. A knee scooter can be easier than crutches for people who have weak arms. Prepare meals in advance, since carrying hot food with one free hand is difficult.

Desk workers often return after 2 to 4 weeks with the leg raised, while physical jobs usually need 4 to 6 months. Ask for a medical certificate early. If you drive a car with automatic gears, the right foot is the most important consideration; read our surgery day guide for a practical checklist.

What should I send for a remote review?

Send recent standing X-rays as image files, any MRI reports with the images, a short history of treatments such as braces and injections, your medicines and allergies, and clear photographs of the feet from behind and from the side while standing. A clinician can then judge the stage and propose a plan.

Our quote request asks for these items, and the treatment planning guide explains how the information is used. For international patients, a pre-travel video call is usual so you can ask questions before you commit.

What do I pack and what happens the night before?

Pack loose trousers that fit over a bulky dressing or boot, a supportive shoe for the other foot, a charger, your scan discs and your medicines list. You will usually stop eating about 6 to 8 hours beforehand and drinking clear fluids a little later, as instructed. Shower with the antiseptic soap if you are given one.

Flatfoot reconstruction is done under general or spinal anaesthesia with a nerve block, takes about 150 minutes and combines several steps: a calf release if needed, a heel bone shift, a lengthening or tendon transfer, ligament repair and fixation with screws or plates. Fusion replaces some of these steps in a stiff foot.

How is anaesthesia given and how are you positioned?

Most patients have either a general anaesthetic or a spinal anaesthetic, plus a nerve block around the ankle or behind the knee that numbs the leg for 12 to 24 hours. You lie on your back with a cushion under the hip, so that the foot tilts outward and the inner ankle is easy to reach.

A tourniquet on the thigh limits bleeding and gives a dry field. Antibiotics are given just before the first cut, and the skin is cleaned and covered with sterile drapes. Imaging equipment is set up so that the alignment can be checked during the operation.

What are the main steps of the operation?

The common steps are listed below. Not every patient needs every step, and the order may vary.

1. Release or lengthen a tight calf, either with a small cut in the calf fascia or with a lengthening of the Achilles tendon.
2. Open the damaged posterior tibial tendon sheath, clean the tendon and remove diseased tissue.
3. Cut the heel bone and slide the back portion inward, which is a medial displacement calcaneal osteotomy, and fix it with one or two screws.
4. Where the front of the foot is turned outward, lengthen the outer side of the heel bone or add a bone wedge to the inner midfoot.
5. Transfer a healthy toe-bending tendon to the navicular bone to replace the posterior tibial tendon.
6. Repair or tighten the spring ligament, which supports the head of the talus.
7. Check alignment on imaging, close the layers and apply a padded splint.

How does the tendon transfer work?

The flexor digitorum longus tendon bends the lesser toes. Its job can be spared because other tendons do the same task. The surgeon detaches it near the arch, passes it through a drill hole in the navicular and fixes it with a screw or anchor. It then acts like a new posterior tibial tendon, holding the arch from the inside.

The transfer does not work well alone, because a collapsed heel keeps pulling on it. That is why a bone cut that realigns the heel is added. Together, they share the load while the tendon strengthens over several months.

Which flatfoot reconstruction techniques are used?

The table compares the main components and when each is chosen.

When is joint fusion added to flatfoot reconstruction?

If the joints beneath the ankle have lost their motion or are worn out, preserving them offers little benefit. The surgeon removes the damaged cartilage, aligns the bones and fixes them tightly with screws or staples so that they join into one block. A double fusion involves two joints; a triple arthrodesis treats three.

Fusion gives a lasting, stable foot, but the hindfoot can no longer move side to side, and the neighbouring joints take extra load over many years. Surgeons try to preserve joints in younger patients, and they reserve fusion for those who truly need it.

What about the ankle and the spring ligament?

In advanced disease the deltoid ligament on the inner ankle stretches, and the ankle can tilt outward. A deltoid reconstruction, or in worn ankles a total ankle replacement or ankle fusion, may be added. These are planned individually and extend recovery.

The spring ligament is a thick band under the head of the talus. If it is torn, a repair with sutures, an anchor or a graft supports the arch from below. Many surgeons repair it routinely when the bone work is also being done.

How long does flatfoot reconstruction take?

Flatfoot reconstruction usually takes about 150 minutes in the operating room, though a heel-only procedure may take less than 90 minutes and a combined triple fusion with an ankle step can take 3 hours or more. You will spend additional time in the recovery area before going to a ward.

How is the wound closed and protected?

Layers of deep tissue are closed with absorbable sutures, and the skin is closed with stitches or clips. A dressing and a padded plaster splint hold the foot in a neutral position and protect the bones and tendon. The splint is changed at the first clinic visit, usually after 10 to 14 days.

Most people stay 2 nights after flatfoot reconstruction. The aim of the stay is safe pain control, a first lesson with crutches or a scooter, wound checks and clear instructions on keeping all weight off the foot. Discharge depends on your pain, dressing, and your ability to move around safely.

What happens on the day of surgery?

You arrive fasted, change into a gown and meet the surgeon and the anaesthetist. The surgeon marks the correct leg. After about 150 minutes in theatre you wake up in the recovery room, with a heavy splint on the foot and a numb leg from the nerve block.

A nurse monitors your breathing, circulation and the colour of your toes. You are given a drink and a light meal once awake, and you are moved to a ward with the foot raised on pillows. Most people sleep a lot on the first evening.

How is pain controlled?

Pain control uses several layers: the nerve block, regular paracetamol, an anti-inflammatory if it is safe for you, and stronger tablets for short use. Pain often returns as the block wears off, after 12 to 24 hours, so it is wise to take tablets before it fades.

Keeping the foot above the level of the heart, using ice around the splint and avoiding dangling the leg all reduce throbbing. Tell the nurse about numbness that spreads, severe pain not relieved by tablets or tight swelling inside the splint.

How do you move around after surgery?

A physiotherapist teaches you to stand and move with crutches or a knee scooter on the first or second day, always without putting weight on the operated foot. You also practise stairs, toilet transfers and getting in and out of a car. Blood thinners or compression may be used to lower the clot risk.

When can you go home?

You can usually leave after 2 nights if the pain is controlled with tablets, the splint is dry and comfortable, your toes are warm and pink, you can move safely and you understand the instructions. You receive a medication list, a contact number and a date for the first dressing and splint check.

What does wound and splint care involve?

Keep the splint dry with a waterproof cover when washing. Do not poke inside it or remove it. Report an odour, a spreading red area, a high temperature or severe pain. At about 2 weeks the stitches are checked and a cast or boot is fitted.

What should international patients know?

International patients should plan for at least 10 to 14 days in the city of surgery, so the first wound check and the splint change happen under the surgeon who operated. Flying home is usually possible after that, with the leg elevated and an aisle seat, but ask about clot prevention first.

Arrange a companion, a ground-floor room if possible and local transport. Our travel and accommodation guide, flying after surgery guide and companion guide cover the practical details, and our hospital directory lists accredited centres.

Recovery from flatfoot reconstruction is slow and staged. Expect about 6 weeks with no weight on the foot, around 6 weeks in a boot, then gradual return to shoes, and about 20 weeks before most daily activities feel normal. Strength and endurance may improve for up to a year, and swelling may last even longer.

The flatfoot reconstruction recovery time is long mainly because bone and tendon heal at different speeds. Bone usually knits in about 6 to 12 weeks, whereas a transferred tendon keeps remodelling and gaining strength for 6 months or more. Posterior tibial tendon surgery of any kind rewards patience more than effort in the early weeks.

What is normal pain and swelling in the first weeks?

The foot is sore and swollen in the first 2 weeks, and the toes may look dusky when the leg is down. Raise the leg above hip height as much as possible, particularly during the first 10 days. Pain usually becomes manageable with tablets over the first week and fades slowly.

Swelling is the main limit to comfort. It can return each evening for months and often comes back when you do more. Compression sleeves, elevation and gentle activity usually help. A hot, red, rapidly swelling calf needs urgent assessment, as it may be a clot.

What happens at 2, 6 and 12 weeks?

At about 2 weeks the wound is checked, stitches are removed and the splint is changed to a cast or boot. At about 6 weeks, X-rays show whether the bones have started to join, and weight-bearing in a boot begins if healing is progressing. At 12 weeks, most people are in a supportive shoe or brace and are walking without aids.

What does physiotherapy involve after flatfoot reconstruction?

Physiotherapy begins gently, with toe movement and hip, knee and core exercises while the foot is protected. After the boot comes off, a therapist works on ankle range, calf stretching, balance and the strength of the tendon transfer. Goals include a single-leg heel raise, which is a demanding test of the repair.

Specific exercises include towel scrunches, resisted foot inversion with an elastic band, walking drills on a flat surface and slow step-ups. Our rehabilitation guide explains how to organise sessions at home.

When can I drive, work, fly and exercise?

Driving an automatic car is often possible after the right foot has bone healing and you can brake firmly, usually about 8 to 12 weeks. A desk job may resume after 2 to 4 weeks with the leg raised. Long-haul flying is usually delayed until after the first wound check, and often until 4 to 6 weeks.

Walking for exercise, stationary cycling and swimming usually start between 3 and 5 months. Impact sports, hiking and jobs with long standing or ladder work often wait 6 to 9 months, and some surgeons advise lower-impact activity for good.

How should I look after the scars and the skin?

Once the stitches are out and the wound is sealed, gently massage the scars with a plain moisturiser for a few minutes each day. Protect new scars from strong sun for the first year. A thin scar over the inner ankle is common, and some numbness beside it often improves slowly over several months.

Which symptoms need urgent attention?

Contact the surgical team or seek local emergency care for fever, spreading redness, discharge or a bad smell from the wound, calf pain with swelling, shortness of breath or chest pain, toes that turn blue or numb, or pain that suddenly worsens. Do not wait for the next appointment when these appear.

After returning home, keep the surgeon informed. Our follow-up after returning home guide sets out how to arrange X-rays and reviews locally.

Most people who have flatfoot reconstruction report meaningful pain relief, a more stable heel and better walking tolerance, and the great majority of well-selected patients are satisfied with the result. Success means a comfortable foot that works for daily life, not a perfectly normal arch.

What does a good result from flatfoot reconstruction look like?

A good result is a foot that carries weight without pain on the inner ankle, a heel that sits close to straight when you stand, and a stride with a firm push-off. You can walk for longer, use ordinary shoes with or without a simple insert, and the foot no longer feels as if it is giving way.

Many patients can manage a single-leg heel raise, although strength may stay a little lower than on the other side. The arch will generally look better but not entirely normal. Photographs and standing X-rays help you and your surgeon see the gains objectively.

What is the flatfoot reconstruction success rate?

Studies of joint-preserving flatfoot reconstruction, and of triple arthrodesis for stiff feet, report that most patients obtain good pain relief and function in the medium term. Exact figures vary by technique, stage and the way success is measured, so be cautious about any single percentage. A surgeon should explain results in their own practice.

Higher success is linked with correct stage selection, restored heel alignment, careful soft tissue balance and following the weight-bearing plan. Lower success is linked with smoking, uncontrolled diabetes, obesity, and trying to return to heavy activity too soon.

What factors improve or worsen results?

How long do the results last?

Many reconstructions remain comfortable for years, and the ongoing health of the ankle joint is often better than it would be if the flatfoot had been left to progress. Tendon transfers and bone cuts can stretch or settle over time, and some patients eventually need an insert or a later fusion.

Fused feet are very durable, though the neighbouring joints can wear after many years. Regular follow-up, sensible footwear and weight control help to protect the result. Our Achilles tendon repair page explains a related soft tissue operation that shares calf rehabilitation principles.

When is revision needed?

Revision may be considered if the arch collapses again, a bone fails to unite, hardware causes ongoing pain, or a fused foot develops arthritis in a nearby joint. It is not common but is more complex than a first operation. An accurate diagnosis of why the first surgery failed guides the revision plan.

If you have had previous foot surgery, send operative notes and images with your enquiry so that a plan can build on what was done before.

Flatfoot reconstruction relies on fixation screws, anchors, plates and sometimes bone graft, along with intraoperative X-ray imaging to check alignment. Most hardware is titanium or stainless steel, and tendon transfers use screws or suture anchors. Robotic or navigated systems are not standard for this operation.

Which implants and fixation devices are used?

Cannulated screws, which are hollow so they can be slid over a guide wire, secure the heel bone cut. Plates and wedges hold lengthening cuts in the lateral column, and compression screws or staples hold a fusion. Material is usually titanium or stainless steel, and most people keep their hardware for life.

The tendon transfer is secured with an interference screw, a suture anchor or a bone tunnel. Hardware is removed only if it becomes prominent or painful after the bone has healed, which is a reasonably small, minor operation.

What role does bone graft and biologic support play?

Bone graft, taken from the patient or from a bone bank, fills the gap in a lengthening cut or supports a fusion. Synthetic substitutes may be used as well. Orthobiologics such as platelet-rich plasma remain debated and are not essential. Your surgeon should say which material is planned and why.

How does imaging guide the operation?

A mobile X-ray unit, called a C-arm, takes live pictures during surgery so the surgeon can confirm heel position, screw length and joint alignment before closure. Some centres also use weight-bearing CT scans before surgery to measure the foot in three dimensions, which helps in difficult or revision cases.

What about 3D planning, custom guides and robotics?

Three-dimensional planning and printed cutting guides are used in a few specialist units to plan complex deformities, but they are not required for routine reconstruction. Robots are not part of standard flatfoot care. The surgeon's experience in staging and technique matters far more than the gadgetry.

Which sutures, wound products and braces support healing?

Absorbable sutures close deep layers and a fine skin suture or clips close the surface. After the cast phase, a hinged boot, an ankle brace or a custom orthotic may support the arch. Your surgeon will decide on bracing based on the tendon repair and the way the foot feels at 3 to 6 months.