Ankle arthritis
Wearing of the cartilage of the ankle joint, leading to pain, stiffness, and reduced function. Unlike hip and knee arthritis, ankle arthritis is most commonly caused by previous injury rather than wear-and-tear alone.
📊 Symptomatic ankle arthritis affects approximately 1% of adults - around 9 times less common than knee arthritis. Around 70-80% of cases are post-traumatic, following previous ankle fractures or recurrent sprains.
What is ankle arthritis?
The ankle is a complex hinge joint formed by three bones - the tibia (shin bone), fibula (outer leg bone), and talus (a bone in the back of the foot). The ends of these bones are covered in a smooth layer of articular cartilage that allows the joint to glide smoothly during walking and running. In ankle arthritis, this cartilage wears thin or is lost altogether, leading to bone rubbing on bone, inflammation, pain, and stiffness.
Ankle arthritis differs from hip or knee arthritis in two important ways. First, it is much less common - the ankle is a remarkably resilient joint and rarely develops primary (wear-and-tear) arthritis. Second, when it does occur, it is usually caused by previous injury, particularly ankle fractures, recurrent sprains with chronic instability, or osteochondral injuries to the talus. Inflammatory arthritis (such as rheumatoid) and septic arthritis are less common causes.
Treatment focuses on managing pain and maintaining function. Many patients can be managed with non-surgical measures for many years. When surgery is required, the two main options are ankle fusion (arthrodesis) and total ankle replacement (arthroplasty). Both have their advantages, and the choice depends on patient age, activity level, deformity, and whether neighbouring joints are also affected.
Common causes
- Previous ankle fracture, especially involving the joint surface (post-traumatic, most common)
- Recurrent ankle sprains and chronic instability
- Osteochondral injuries of the talus
- Inflammatory arthritis - rheumatoid, psoriatic, or gout
- Primary osteoarthritis (uncommon - around 7% of cases)
- Avascular necrosis of the talus
- Previous infection (septic arthritis)
- Congenital deformity
Who is at risk? The strongest risk factor is a previous ankle injury - particularly a fracture involving the joint surface. Other risk factors include obesity, occupational or sporting activities involving heavy loading, malalignment of the leg (varus or valgus deformity), inflammatory arthritis, and previous ankle infection or surgery.
Symptoms
Symptoms vary depending on the severity and duration of the condition. Common symptoms include:
- Gradual onset of ankle pain, worse with weight-bearing activity
- Morning stiffness, typically lasting less than 30 minutes
- Pain at the end of the day after activity
- Reduced range of movement, particularly dorsiflexion (pulling foot up)
- Swelling around the joint, sometimes with a feeling of warmth
- Crunching or grinding sensation (crepitus) with movement
- Visible deformity in advanced cases - typically varus (inward) tilting
When to seek help: See a foot and ankle specialist if you have ongoing ankle pain affecting daily life despite simple analgesia and activity modification, if you have increasing stiffness, swelling, or deformity, or if you have a history of significant ankle injury and are developing new symptoms years later.
How is it diagnosed?
Your foot and ankle specialist will take a detailed history and examine the foot. The following investigations may be arranged to confirm the diagnosis:
- Clinical examination - assessment of range of movement, deformity, stability, and gait
- Weight-bearing X-rays - the cornerstone of diagnosis, showing joint space narrowing, bone spurs (osteophytes), and any deformity
- MRI - useful for assessing cartilage, bone marrow oedema, and any associated soft tissue problems
- CT scan - to assess complex deformity or plan surgery
- Assessment of neighbouring joints - subtalar, talonavicular, calcaneocuboid - which may also be affected
Weight-bearing X-rays are essential as they show the true alignment of the joint. Non-weight-bearing imaging can significantly underestimate the severity of deformity. The findings should be correlated with symptoms - radiographic arthritis is more common than symptomatic arthritis, particularly in older patients.
Treatment pathway
Treatment is tailored to the severity of the condition, your age, activity level, and overall health. Most conditions are treated in a stepwise fashion, starting with the least invasive options.
Activity modification and analgesia
Reducing high-impact activities, taking simple analgesics (paracetamol, NSAIDs as appropriate), and using supportive footwear. Weight loss provides significant benefit for those with elevated BMI.
Footwear and orthotics
Cushioned, supportive shoes with a stiff rocker sole reduce ankle motion and offload the joint. Custom-moulded orthotics can correct mild deformity and improve gait. Ankle braces (such as an ankle-foot orthosis) provide additional support.
Intra-articular injection
Image-guided injection of corticosteroid into the ankle joint can give months of pain relief and is often used to confirm that the ankle is the source of pain. Hyaluronic acid injections may also be considered. Repeated injections are limited.
Joint-preserving surgery
In selected younger patients with limited disease, options include arthroscopic debridement (removing bone spurs and loose bodies), supramalleolar osteotomy (realigning the lower leg to offload the worn part of the joint), or distraction arthroplasty. These aim to delay the need for fusion or replacement.
Ankle fusion (arthrodesis)
The talus and tibia are joined together, eliminating motion at the ankle joint but also eliminating pain. Fusion is highly durable, reliable, and well-suited to younger, active patients. The trade-off is loss of ankle motion, although the surrounding joints compensate to a degree. Some increased risk of arthritis in neighbouring joints over the long term.
Total ankle replacement
Replacement of the worn joint surfaces with metal and plastic components. Preserves motion, which protects neighbouring joints and gives a more natural gait. Generally preferred in older, less active patients without significant deformity. Modern implants have improved survivorship, although revision rates remain higher than for hip or knee replacement.
Recovery
Recovery from ankle fusion and ankle replacement is similar in the early stages. Patients are typically non-weight-bearing for 6 weeks, followed by progressive loading in a boot for a further 6 weeks. Most patients are walking comfortably by 3-6 months. The choice between fusion and replacement depends on patient factors including age, activity level, deformity, and the condition of the surrounding joints.
- Conservative management trial: 3-6 months
- Recovery from ankle fusion: 4-6 months (full union)
- Recovery from ankle replacement: 3-6 months
- Return to low-impact activity (post-op): 4-6 months
- Long-term implant survivorship (replacement): 80-90% at 10 years
What results can I expect?
Conservative management can provide good symptom control for many years in selected patients. Surgery is highly effective for pain relief, with patient satisfaction around 85-90% for both fusion and replacement at medium-term follow-up. Ankle replacements have improved significantly, with 80-90% survivorship at 10 years, although revision rates remain higher than hip or knee replacements.
In numbers
When can I…?
Typical activity timelines for this condition. These are approximate and vary considerably between patients. Always follow the specific guidance given by your surgeon and physiotherapist.
| Activity | Typical timeline | Notes |
|---|---|---|
| Walk for exercise | As tolerated | Walking on level ground is generally safe and recommended. Stiff-soled shoes and a rocker sole reduce ankle motion and pain.[1] |
| Drive | No restriction | Established ankle arthritis does not preclude driving. After surgery, see below. |
| Use a brace or boot | Anytime | A supportive lace-up or rigid brace can substantially reduce pain in everyday activities.[1] |
| Consider injection | For symptom flares | A corticosteroid injection can give weeks-to-months of relief and is useful for getting through a difficult period.[1] |
| Return to driving after surgery | 10-12 weeks (fusion or replacement) | When you can perform an emergency stop and are out of a boot or cast. Inform your insurer.[2] |
| Walk normally after surgery | 4-6 months | After fusion or replacement, gradual return to normal walking happens over several months.[1] |
Is this normal?
Common concerns from patients with this condition or recovering from treatment, and whether they are expected or worth mentioning to your team.
Preparing for surgery?
Read our step-by-step guide: what to expect before, during, and after your procedure.
Related conditions
Your questions, answered
Plain-English answers to the things people most often ask, grounded in published guidance. Tap a question to open it.
About thisWhy does ankle arthritis often follow an old injury?
Unlike hip and knee arthritis, most ankle arthritis is post-traumatic, developing years after a fracture or repeated sprains rather than from age-related wear.
That is why it can affect people who are otherwise relatively young and active.
Your choiceWhat can I try before surgery?
Many people manage for years with supportive stiff-soled or rocker-bottom shoes, an ankle brace, activity changes, weight management, pain relief and sometimes an injection.
These do not cure the arthritis but can keep you comfortable and mobile.
Your choiceFusion or ankle replacement, which is better?
The UK TARVA randomised trial found that both ankle fusion and total ankle replacement improved quality of life and were safe, with no clear overall winner.
The right choice depends on your age, activity level, the state of neighbouring joints and your bone quality, and is best discussed with your surgeon.
Getting backHow long is recovery from surgery?
Both operations involve months of recovery and rehabilitation. A fusion needs the bone to unite before full weight-bearing.
Your team will guide weight-bearing and the return to activity for your specific operation.
WellbeingWill I be able to walk normally?
Most people regain good, largely pain-free walking after surgery. High-impact activities such as running tend to be limited whichever operation you have.
Setting expectations early helps you plan day-to-day life and work.
UrgentWhat warning signs need review?
Rapidly worsening pain and swelling, a hot joint, or feeling unwell with a temperature should be checked, as these can signal infection or another cause.
Seek urgent help for a hot, swollen calf or breathlessness.
References & further reading
- 1.British Orthopaedic Foot & Ankle Society: Ankle arthritis patient information
- 2.Royal College of Surgeons of England: Driving after surgery guidance
References are to UK clinical guidance and patient information from recognised organisations. This page is for general information and does not replace personalised advice from your own clinical team.