Ankle Arthritis

Ankle arthritis is progressive wear of the cartilage lining the ankle joint, producing pain, stiffness, and a gradual reduction in mobility. Unlike hip and knee arthritis, which most often develop from general wear over time, ankle arthritis is frequently the long-term consequence of a specific previous injury — a distinction that shapes how the condition is assessed and discussed with patients.

What is ankle arthritis?

Ankle arthritis develops as the cartilage lining the ankle joint wears down, reducing the smooth, low-friction surface the joint depends on for pain-free movement. As cartilage loss progresses, the joint space narrows, the bone beneath can respond with new bone formation at the joint margins, and stiffness and pain progressively worsen. The ankle is somewhat unusual among major joints in that post-traumatic arthritis — arthritis developing after a significant previous injury such as a fracture or severe ligament tear — accounts for a substantial proportion of cases, rather than degenerative wear alone. This distinction is clinically important, since post-traumatic arthritis can develop years, sometimes decades, after the original injury, well after it has been forgotten as a contributing factor.

Causes

• Previous ankle fracture or significant ligament injury — the single most common identifiable cause
• General degenerative wear, particularly with advancing age
• Chronic ankle instability, through sustained abnormal joint mechanics over time
• Inflammatory joint conditions, such as rheumatoid arthritis, in a smaller proportion of cases

Symptoms

• Pain with activity, initially, progressing to pain at rest in more advanced disease
• Stiffness, particularly noticeable first thing in the morning or after periods of rest
• Swelling around the joint
• A reduced range of motion, affecting the ability to walk on uneven ground or climb stairs comfortably
• In advanced cases, a change in gait to compensate for a stiff, painful joint

How it is diagnosed

Clinical examination assesses range of motion, gait, and the specific location of pain, alongside a detailed history of any previous ankle injury. Weight-bearing X-ray is the standard imaging investigation, showing joint space narrowing and bony changes characteristic of arthritis; CT or MRI is occasionally used for more detailed pre-surgical planning.

Non-surgical management

• Activity modification — reducing high-impact loading of the joint where it reliably provokes symptoms
• Footwear modification — a supportive or rocker-soled shoe reduces the degree of ankle motion required during walking
• Bracing — provides external support and can meaningfully reduce pain during activity
• Anti-inflammatory medication and, in some cases, corticosteroid injection — for symptomatic flares

When surgery is considered

Surgery is considered when non-surgical measures no longer adequately control symptoms and the condition is significantly limiting daily activity. The two principal surgical options — ankle fusion and total ankle replacement — each offer a different balance of pain relief, stability, and preserved joint motion, and the right choice depends on individual factors including age, activity level, and the pattern of arthritis.

Frequently asked questions

What does ankle arthritis feel like?

Pain with activity that can progress to pain at rest, along with stiffness — particularly first thing in the morning — and a gradually reducing range of motion at the joint.

Is ankle arthritis always caused by a previous injury?

Not always, but it’s more common than in other joints. A significant proportion of ankle arthritis follows a previous fracture or serious ligament injury, sometimes years earlier, rather than developing from general wear alone.