Ankle Fusion

Ankle fusion is a surgical procedure that permanently joins the bones of a painful, worn ankle into one solid unit. The surgeon removes the damaged cartilage, positions the foot squarely and fixes it with screws or a plate until the bones grow together. The operation takes about 100 minutes, needs about 2 nights in hospital, and recovery lasts around 16 weeks.

What is ankle fusion?

The true ankle joint is formed by the lower end of the tibia, the shin bone, and the talus, a bone that sits between the tibia and the heel. When cartilage covering these surfaces wears away, the bones grind, swell and hurt with each step. The medical name for the fusion is ankle arthrodesis. It stops motion in the diseased joint, which removes the source of the pain.

After fusion, the two bones heal into one, like a broken bone that mends. The surgeon sets the foot in a neutral, walking-ready position, with the sole flat to the floor, a few degrees of outward rotation, and a slight backward tilt of the heel. That position is chosen carefully, because it decides how natural the walking will feel.

What problems does ankle fusion treat?

Ankle fusion is mainly used for advanced ankle osteoarthritis, including arthritis after an old fracture, inflammatory arthritis, severe deformity, and joints damaged by infection or failed earlier surgery. It is also an option when a replacement is not suitable, for example in heavy or very active patients, those with poor bone, or those with severe instability.

How does ankle fusion relieve pain?

Pain in arthritis comes from moving a joint whose surfaces no longer glide. If the joint cannot move, the pain signals fall away. A solid fusion also corrects the alignment and makes the ankle stable, which helps with giving way. The trade-off is simple: you give up a painful, limited movement to gain a steady, load-bearing platform.

Will I be able to walk normally?

Most people walk well after fusion. The subtalar, midfoot and knee joints compensate for the missing ankle motion, so you can usually walk, cycle, swim and use stairs. A stiff-ankle gait is noticeable on slopes, uneven ground and when running. A shoe with a rocker sole can smooth the roll of each step, and many people simply use a firm trainer.

Is ankle fusion major surgery?

Yes, it is a significant operation with bone healing, a period without weight-bearing and months of rehabilitation. It is not a high-risk surgery for a healthy patient, but it demands patience and discipline. The leg is protected for 6 to 8 weeks, so you need help at home, and the bone remains remodelling for many months after you walk again.

How does ankle fusion compare with ankle replacement?

Both treat end-stage arthritis. Replacement keeps motion and may feel more natural in selected older patients, but implants can wear and loosen and are not suitable for everyone. Fusion is a very durable solution that carries a long track record, especially in younger, heavier or more active people. Our page on total ankle replacement sets out the other option in detail.

Where does it sit within foot and ankle surgery?

Ankle fusion belongs to the reconstructive side of foot and ankle surgery. It is usually offered late, after bracing, shoe changes, injections and sometimes a keyhole operation have run their course. Because it cannot be undone, surgeons expect a long, careful conversation, a firm diagnosis on imaging and a clear match between your pain and the arthritis they can see.

Who should think twice?

Be careful if you smoke, have poorly controlled diabetes, poor circulation, a history of infection in the joint, or severe arthritis already in the neighbouring subtalar joint. Surgery in these cases can still be right but needs special planning. If your arthritis is mild or mainly mechanical, a less drastic step such as ankle arthroscopy or bracing may be preferable.

Preparing for ankle fusion focuses on bone and wound health, because the operation depends on the bones healing together. The main steps are detailed imaging, stopping nicotine, controlling diabetes and vitamin levels, planning crutches or a wheelchair, and arranging weeks of help at home. Good preparation is one of the strongest influences on whether the fusion unites.

What imaging and tests are needed?

Weight-bearing X-rays of the ankle and foot show alignment and arthritis. A CT scan maps bone loss and nearby joints, and MRI may be added when blood supply, cysts or infection are a concern. Blood tests check anaemia, kidney function, inflammation, diabetes control and vitamin D. An ECG and anaesthetic review are standard for most adults.

Why does smoking matter so much?

Nicotine narrows small blood vessels and reduces bone healing. Smokers have a clearly higher chance of nonunion and wound problems than non-smokers. Most surgeons ask you to stop for at least 4 to 6 weeks before and throughout healing, and some check a nicotine test. Patches and vaping also contain nicotine, so ask your surgeon which products are acceptable.

How should I manage medical conditions?

Aim for good diabetes control, treat anaemia, and optimise heart and lung conditions. Your doctor will review blood thinners, anti-inflammatories, steroids and rheumatology drugs, which may need pausing. Correct vitamin D and calcium if low, and keep a healthy diet with enough protein. Do not stop prescribed medicines without a plan from your doctor.

What non-weight-bearing preparation helps?

Weeks without weight on the leg are the hardest part. Practise with crutches or a knee scooter, strengthen your arms, core and the other leg, and rehearse getting in and out of bed, the toilet and the shower. A wheelchair for longer distances is often easier than crutches. A physiotherapist can teach safe stair techniques before surgery.

What should I send for a remote review?

Send your standing X-rays and CT or MRI reports, with images if you can, a summary of previous treatments and operations, your medicines list, height and weight, smoking status, and photographs of the ankle. Our guide to medical record review explains what specialists look for, and treatment planning covers the next steps.

How should I prepare home and work?

• Set up a bed and bathroom on one floor, and add a shower chair and raised toilet seat if needed.
• Arrange meals, shopping and lifts for the first 6 to 8 weeks.
• Plan 2 to 4 weeks off desk work, or 3 to 6 months for physical jobs.
• Do not plan to drive for about 8 to 12 weeks after a right-sided fusion.
• Ask your employer about adapted duties and home working.

What happens just before surgery?

You fast for the hours advised, wash with antiseptic, and meet the anaesthetist and surgeon. The surgeon marks the leg and confirms the plan, including the position of the foot and the choice of screws or plate. You will also discuss bone graft, which may come from your own leg or from a bone bank.

In ankle fusion the surgeon removes the remaining cartilage from the tibia and talus, shapes the surfaces to fit, sets the foot in the correct position and holds it with screws or a plate until the bone unites. The operation usually takes about 100 minutes. It can be done through an open incision or an arthroscopic approach, and the choice depends on deformity and bone quality.

What anaesthesia is used?

The typical plan is general or spinal anaesthesia plus a nerve block at the back of the knee and ankle, which gives many hours of pain relief afterwards. A thigh tourniquet limits bleeding. The anaesthetist discusses your options, balancing heart and lung health, your wishes and the likely length of surgery.

What are the key steps of an open ankle fusion?

1. You lie on your back with a pad under the hip, and the leg is cleaned and draped. Antibiotics are given.
2. An incision is made on the front or outer side of the ankle, and the surgeon protects the nerves, tendons and vessels.
3. The joint is opened, and cartilage and damaged bone are removed from both surfaces until healthy, bleeding bone is seen.
4. The bone ends are shaped so they fit flat against each other. Small holes may be drilled to encourage healing.
5. The foot is set in a neutral position: heel slightly outward, some outward rotation and the talus slightly back under the tibia.
6. Temporary wires hold the position, and X-rays check it before two or three large screws, or a plate and screws, secure it.
7. Bone graft may be packed into gaps, the wound is closed in layers, and a padded splint is applied.

What is arthroscopic ankle fusion?

Arthroscopic ankle fusion uses a camera and small instruments through portals about 5 mm long to remove cartilage, then screws are placed through tiny cuts. It suits ankles with little deformity and good bone. Compared with open fusion, it often means less soft-tissue damage and fewer wound problems, but it is more demanding and may not correct a tilted ankle.

What is a transfibular approach?

In this method the surgeon cuts the lower end of the fibula, the thin bone on the outer side, opens the joint widely, then reuses the fibula as a bone graft laid against the fused surfaces. It gives wide access in deformed ankles and helps unite bone. Other surgeons prefer to keep the fibula and use an anterior approach with a plate.

Which fixation method do surgeons choose?

What happens if the bone is poor or there is bone loss?

If there are cysts or bone loss from a failed replacement, the surgeon uses bone graft from your own pelvis or heel, donor bone, or a structural graft, sometimes with a long nail through the heel into the tibia. This tibiotalocalcaneal fusion fuses the neighbouring subtalar joint as well. It provides more stability, at the price of less foot motion.

How is the foot position decided?

Position is the part of the operation patients rarely hear about. The surgeon aims for the foot at a right angle to the shin, the heel tilted slightly outward by about 5 degrees, and the foot turned outward by about 5 to 10 degrees, matching the other side. A foot fused too far down or turned in makes walking awkward, so the surgeon checks it with the sole pressed flat against a board before fixing it.

How long does ankle fusion take?

Most operations take about 100 minutes of surgery, ranging from 75 minutes for a simple arthroscopic case up to 2.5 hours for a complex deformity with graft. Together with anaesthesia and waking, expect 3 to 4 hours away from the ward. The surgeon checks position with live X-rays before closing.

What happens at the end?

The wound is closed carefully, since skin around the ankle is thin. A thick padded splint holds the foot at a right angle. You wake in recovery, where staff check your toes for warmth, colour and sensation. X-rays after surgery confirm the screws and position. Then you return to the ward with the leg raised.

Most people stay about 2 nights after ankle fusion, so the usual plan is 2 hospital nights. The stay allows pain control, early elevation, X-rays, clot prevention and training with crutches or a knee scooter. Because you cannot put weight on the leg for weeks, discharge depends on safe movement and good support at home.

What happens on the day of surgery?

You arrive fasting and meet the team. After the operation, you are taken to recovery, then the ward with the leg raised on pillows above heart level. A nurse checks the toes and the dressing every hour at first. Eating and drinking restart when you are awake, and a physiotherapist visits within the first day.

How is pain controlled?

The nerve block usually works for 12 to 24 hours, and pain can rise sharply as it fades. To prevent this, you start regular paracetamol, an anti-inflammatory if suitable and a short course of stronger medicine before the block wears off. Elevation, ice through a cloth and anti-sickness medicine keep you comfortable. Pain commonly peaks on days 2 and 3.

What do the 2 nights involve?

On day 1 you practise bed-to-chair moves and short hops with a frame or crutches. On day 2 you learn stairs, the toilet and the shower with supervision. X-rays may be repeated, the dressing is checked, and your team plans clot prevention, usually with injections or tablets for several weeks. You leave when pain is controlled and you move safely.

What are the discharge criteria?

Typical criteria are controlled pain on tablets, a warm pink foot, a clean dressing, safe transfers without putting weight on the operated leg, ability to manage stairs or a plan to avoid them, and a helper at home. You receive written instructions on elevation, the splint, medicines, injections and the signs that need urgent contact.

How do I look after the splint and wound?

Keep the splint dry and intact until the first review at around 10 to 14 days. Use a waterproof cover for washing, or wash at a basin. Raise the leg for most of the day, moving the toes often. Contact the team if there is bleeding through the splint, severe pain, fever, a foul smell or numb or blue toes.

What should international patients know?

Planned ankle fusion in turkey is possible, though the 6 to 8 weeks without weight-bearing makes planning important. Most visitors stay about 10 to 14 days for the wound check and splint change, then fly with clot precautions and continue care at home. Read about travel and accommodation, hospital admission and flying after surgery.

Book wheelchair assistance at airports, ask for an aisle or extra-legroom seat, and travel with a companion. See our companion guide. Before you travel, name the clinician at home who will remove stitches, order X-rays at 6 weeks and supervise rehabilitation.

Recovery from ankle fusion is long but predictable: about 6 to 8 weeks with no weight on the foot, a further stage in a boot as the bone consolidates, and then strengthening and gait retraining. The ankle fusion recovery time is about 16 weeks to walk in normal shoes, with swelling and endurance improving for 6 to 12 months.

What does the first 2 weeks feel like?

Expect swelling, bruising and an aching, throbbing pain that is worst at night, especially with the leg lowered. Most of the day is spent resting with the foot above heart level. You move around on crutches or a scooter without touching the operated foot to the floor. Many people feel tired and low, which is normal after major surgery.

How long is the non-weight-bearing period?

Usually 6 to 8 weeks, sometimes longer in smokers, people with poor bone or complex fusions. The foot stays in a splint, then a cast or boot. The surgeon checks X-rays at about 2, 6 and 12 weeks. Putting weight on the foot early can move the bones apart and risk nonunion, so follow this rule strictly.

When does weight-bearing begin?

Once X-rays show early bridging bone, you step on to partial, then full weight in a boot, typically over 2 to 4 weeks. By about 10 to 12 weeks, most people walk in the boot without crutches. A CT scan can confirm union if X-rays are unclear. You transition to a supportive shoe at around 12 to 16 weeks.

What does physiotherapy involve?

Early exercises keep the toes, knee and hip moving and prevent the calf and thigh from wasting. After the boot, physiotherapy trains walking, balance and calf strength, and helps the subtalar and midfoot joints work well. A rocker-bottom shoe or insole may help the foot roll through each step. Exercise in water is very useful once the wound has healed.

When can I drive, work and fly?

• Driving: after right-sided fusion about 8 to 12 weeks, when you are out of the boot and can brake safely; sooner for an automatic car and left leg.
• Desk work: often 2 to 4 weeks with the leg raised.
• Standing or manual work: commonly 3 to 6 months, with graded return.
• Flying: after the first review, with clot precautions and aisle seating.

What does normal healing look like?

Which symptoms are red flags?

Seek urgent help for fever, wound leaking pus, spreading redness, a hot swollen calf, chest pain or breathlessness, or a foot that turns cold, blue or numb. Pain that suddenly rises after weeks of improvement, or a clicking in the ankle with the sense that something has shifted, also needs a prompt review and X-ray.

How can I keep my strength during the weeks without weight?

Strength drops quickly when a leg is protected, so keep the rest of the body active. Seated upper-body and core exercises, straight-leg raises, hip work and gentle toe movement all help. Eat enough protein, take any prescribed vitamin D and drink water. A physiotherapist can set a programme that never loads the operated foot, which keeps you fitter for the rehabilitation phase later.

Will other joints ache afterwards?

The subtalar and midfoot joints work harder after fusion, and some people notice mild aching in the hindfoot after long walks. A supportive shoe, a rocker sole and keeping weight in a healthy range help. See our guides on rehabilitation and follow-up after returning home for planning care when you go home.

Most people have a large drop in pain after ankle fusion, and the ankle becomes stable and reliable for daily life. Success means a solid union, a plantigrade foot, less pain and a better walking tolerance. The cost of the operation is the loss of up-and-down movement, and in the long run some wear in neighbouring joints.

What is the ankle fusion success rate?

The ankle fusion success rate is generally high. Studies suggest that most ankles, often cited as roughly 85 to 95 in 100, unite solidly after fusion, and most patients report meaningful pain relief and improved walking. Rates are lower in smokers, people with diabetes, poor bone or previous infection. Figures differ between studies, so use them as an approximate guide.

How good is pain relief and function?

Pain relief is usually substantial, and many people walk further and do more than before surgery. A normal-looking gait is possible in a good shoe on level ground. Some limp remains on slopes, stairs and uneven paths, and fast running is difficult. Patients who value stability and reliability tend to be most satisfied.

What factors improve the result?

• Stopping nicotine before and after surgery.
• Good bone preparation and a well-aligned foot at the time of fusion.
• Rigid fixation and strictly protected weight-bearing during the first 6 to 8 weeks.
• Controlled diabetes and good nutrition, including vitamin D.
• Healthy neighbouring joints and a sensible body weight.

What can make the result worse?

Smoking, diabetes, steroid use, poor circulation, previous infection, large bone defects and early weight-bearing all raise the chance of nonunion. Poor alignment leads to pain and an awkward gait. Severe arthritis in the subtalar joint can limit benefit, because the next joint down has to do more work and may keep hurting.

What about long-term durability?

A healed fusion is permanent, with no implant to wear out. Over the years, the neighbouring subtalar and midfoot joints may develop arthritis because they bear extra motion, and some people eventually need further treatment. Surgeons discuss this honestly, since the risk grows with time and usually appears long after the main benefit has been enjoyed.

When is revision needed?

Revision may be needed if the fusion does not heal, if hardware causes pain, if the foot heals in a poor position, or if infection develops. It often involves more bone graft, stronger fixation or both. Some people with nonunion remain comfortable and need no further operation, so treatment depends on symptoms and not only on X-ray findings.

How satisfied are patients?

Satisfaction is generally high in people who understood the trade-offs. The most common reasons for disappointment are a long recovery, persistent stiffness, and a limp on rough ground. Talking to the surgeon beforehand about daily activities, such as stairs, hobbies and shoes, makes expectations realistic.

Ankle fusion uses strong screws, plates or an intramedullary nail to hold the bones still, together with bone graft and imaging to guide placement. Most hardware is titanium or stainless steel and stays in place permanently. The goal is stable compression across the joint, because bones unite only when the surfaces are in firm contact and do not move.

Which screws are used?

Large cannulated screws, 6.5 mm to 7.3 mm in diameter, are passed over guide wires from the tibia into the talus, often crossing in different directions to resist rotation. Many are partially threaded, so tightening them pulls the surfaces together, which is called compression. Two or three screws are usual, and they are rarely felt once healed.

When is a plate used?

A plate on the front or outer side of the ankle adds rigidity in deformed ankles or in softer bone. Modern plates are pre-contoured and low profile, and some allow screws to lock into the plate for added stability. A plate can occasionally irritate the overlying skin and tendons, so hardware removal is sometimes considered later.

What is a hindfoot nail?

A tibiotalocalcaneal nail runs from the heel up through the talus into the lower tibia, fusing the ankle and the subtalar joint together. It is chosen for severe deformity, failed replacement or poor bone. The nail spreads load along the bone and is very stable, but because two joints are fused, foot motion is reduced more than with an ankle-only fusion.

What bone graft and biologics may be used?

Surgeons often use local bone from the joint surfaces, and sometimes graft from the heel, the front of the tibia or a bone bank. Bone marrow aspirate and other biologic products are used in high-risk cases, though evidence is mixed. Ask your surgeon what is planned and why. A good graft does not replace excellent contact between prepared bone surfaces.

What imaging and navigation help?

A C-arm provides live X-ray in theatre, so the surgeon can confirm the foot position and screw length. Weight-bearing CT before surgery shows deformity in three dimensions. Patient-specific guides are used in some centres, but they are not routine. Experience in setting the foot position matters more than any single gadget.

What about bone stimulators?

Some surgeons use an external or implanted bone stimulator in patients at high risk of nonunion, such as smokers or people with diabetes. Evidence is limited and results vary. They are an add-on, never a substitute for good surgical technique, protection of the foot and optimising health beforehand.