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Post-traumatic ankle arthritis
Shelain Patel
Post-traumatic ankle arthritis develops following an injury to the ankle. It can occur after fractures, severe ankle sprains, ligament injuries or other trauma that damages the joint.
Symptoms may develop relatively soon after the original injury or may become apparent many years later.
Treatment can be more complex when arthritis is associated with previous fractures, deformity, metalwork or multiple previous operations.
Mr Shelain Patel is a Consultant Orthopaedic Foot & Ankle Surgeon in London and Consultant at the Royal National Orthopaedic Hospital (RNOH), with specialist expertise in ankle arthritis and complex foot and ankle reconstruction.
Why does trauma cause ankle arthritis?
The ankle is a highly congruent joint. Damage to the cartilage or alteration of the alignment of the joint can change how forces are transmitted through it.
Following significant injury, arthritis may develop because of:
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direct cartilage damage
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fracture involving the joint surface
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altered alignment
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ligament damage
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chronic instability
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damage to the underlying bone
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previous infection
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complications following surgery
Which injuries can lead to post-traumatic arthritis?
Post-traumatic ankle arthritis can follow:
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ankle fractures
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pilon fractures
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ankle dislocations
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severe ankle sprains
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syndesmotic injuries
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cartilage injuries
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recurrent instability
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previous surgery
A particularly important group are patients who sustained a major ankle fracture earlier in life and subsequently develop progressive pain and stiffness.
How long after an injury can arthritis develop?
There is no fixed timescale. Some patients develop symptoms relatively soon after a significant injury, while others remain relatively symptom-free for many years before developing arthritis. The severity of the original injury, cartilage damage, alignment and subsequent joint mechanics all influence the course.
What are the symptoms?
Symptoms may gradually increase over time and can include:
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ankle pain
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stiffness
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swelling
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reduced walking distance
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pain on uneven ground
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difficulty with stairs
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reduced sporting ability
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grinding or catching
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progressive deformity
How is post-traumatic arthritis diagnosed?
Assessment generally includes a detailed history, examination and imaging. Previous X-rays and operative records can be particularly useful.
Weight-bearing X-rays can demonstrate:
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joint-space loss
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deformity
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previous fractures
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alignment
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bone changes
CT may provide additional information about bone anatomy, previous fractures, bone loss and retained metalwork. MRI can be useful when further assessment of soft tissues, cartilage or bone is required.
Why is post-traumatic ankle arthritis sometimes complex?
Previous trauma can leave several problems that need to be considered together. These may include:
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deformity
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bone loss
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retained metalwork
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ligament instability
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altered hindfoot alignment
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stiffness
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previous infection
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arthritis in neighbouring joints
Consequently, treating the arthritis may require more than simply addressing the ankle joint itself.
Can post-traumatic ankle arthritis be treated without surgery?
Yes. Treatment may include:
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activity modification
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physiotherapy
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footwear modification
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orthotics
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medication
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injections
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walking aids
The appropriate combination depends on symptoms and functional requirements.
Read more about [non-surgical treatment for ankle arthritis].
Ankle replacement after previous fracture
Ankle replacement can be considered in selected patients with post-traumatic arthritis. Previous fractures does not automatically exclude someone from replacement surgery, however, the surgeon needs to assess factors such as:
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ankle alignment
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bone quality
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previous metalwork
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bone loss
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ligament stability
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associated deformity
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previous infection
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condition of the surrounding foot
Additional procedures may sometimes be required.
Read the [complete ankle replacement surgery guide].
Ankle fusion after previous fracture
Ankle fusion remains an option for selected patients with advanced post-traumatic arthritis. It may be particularly relevant when there is substantial deformity, bone loss or other factors that make replacement less suitable.
Read more about [ankle fusion for arthritis].
Previous metalwork
Some patients with post-traumatic arthritis still have plates, screws or other implants from their original fracture surgery. Whether metalwork should be removed depends on its position, symptoms, interference with future surgery and the condition of the bone. Removal is not automatically necessary.
Previous infection
A history of infection is particularly important when considering further surgery. Additional investigation may be necessary to determine whether there is any evidence of ongoing or previous infection before undertaking reconstructive surgery or ankle replacement.
Complex reconstruction
Some patients require correction of alignment or associated problems before, or at the same time as, treatment of the arthritic ankle.
Possible procedures may include:
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osteotomy
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ligament reconstruction
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tendon procedures
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hindfoot reconstruction
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correction of deformity
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management of bone loss
Treatment needs to be planned around the whole foot and ankle rather than the arthritic joint alone.
Frequently Asked Questions
Can an old ankle fracture cause arthritis?
Yes. Post-traumatic arthritis can develop years after an ankle fracture.
Can ankle replacement be performed after a fracture?
In selected patients, yes. Previous fracture is not automatically a contraindication, but the anatomy and previous surgery need careful assessment.
Does previous metalwork prevent ankle replacement?
Not necessarily. Some patients can undergo replacement with existing metalwork, while others may require removal or additional procedures.
Is ankle fusion better after a fracture?
The appropriate operation depends on the individual anatomy, symptoms, deformity, bone quality and previous surgery. Both fusion and replacement may be considered in selected patients.
Can post-traumatic ankle arthritis be treated without surgery?
Yes. Non-operative treatment can reduce symptoms and may be appropriate for many patients.
Book a consultation
If you have developed persistent ankle pain or stiffness following an old fracture, ankle sprain or other significant injury, specialist assessment can establish the cause and identify appropriate treatment options.
[Book a consultation with Mr Shelain Patel]
