What it is

Ankle replacement, also known as total ankle arthroplasty, is a surgical procedure performed to treat pain and stiffness in the ankle arising from advanced arthritis.. Ankle replacement removes damaged joint surfaces and replaces them with prosthetic implants. The goal is to alleviate pain and maintain mobility for walking and performing daily tasks.

The most common form of arthritis affecting the ankle is osteoarthritis. Osteoarthritis is a disease of the cartilage, leading to the loss of cartilage that eventually causes bones to grind against each other. The surgery involves removing the worn-out ends of the tibia (shin bone) and talus (ankle bone) and replacing them with artificial components. It is an alternative to ankle fusion, which eliminates joint movement.

Candidates usually have severe end-stage osteoarthritis. Ankle replacement is typically recommended for patients when conservative treatments like medication and physical therapy have failed to relieve pain and mobility issues.

What happens when it occurs

The worn surfaces are replaced. Early walking with aids progresses to independent gait and walking distances in the community. Strength and balance restore confidence.

Common causes and risk factors

  • Post-traumatic osteoarthritis after fractures or repeated sprains
  • Ageing and higher physical demands at work or sport
  • Alignment or stability problems that overload the joint

Who is most affected

Adults with end-stage ankle osteoarthritis who wish to keep motion for walking and stairs.

Typical symptoms pre-op

  • Deep ankle pain with walking and stairs
  • Stiffness after sitting that eases with movement
  • Swelling after longer days

When to seek care

Postoperatively, seek review for fever, wound change, calf pain, or increasing instability.

How we diagnose

Clinical assessment and X-rays. Preoperative planning considers alignment and bone quality.

What does the procedure involve?

  • Preparation: A special CT scan creates a plan and patient-specific jigs for the surgery.
  • Surgery: An incision is made over the front of the ankle to access the joint.
  • Bone Resection: The damaged ends of the tibia and talus are removed.
  • Prosthesis Placement: The remaining bone is reshaped to fit the new artificial joint, which consists of a plate on the tibia, a cap on the talus, and a plastic disc between them.
  • Closure: The wound is sutured closed after the new joint is positioned.

Recovery

  • Initial Recovery: After surgery, the ankle is immobilised in a plaster or boot, and the leg is elevated to reduce swelling.
  • Weight-Bearing: Most patients are advised to avoid putting weight on the ankle for at least six weeks and will use crutches or a frame for mobility.
  • Rehabilitation: After the wound has healed, physiotherapy is recommended to help regain range of motion and function.
  • Full Recovery: Complete recovery can take up to a year.

Management

  • Early safe walking with aids under guidance
  • Strength for calves, peroneals, and hips, and balance work
  • Gait and stair training, then return to chosen activities
  • Follow-up reviews to monitor the implant and alignment

Rehabilitation milestones

Phase 1 days 0 to 7: transfers, short walks with aids, gentle range.

Phase 2 weeks 1 to 6: progressive walking distance, strength, stairs.

Phase 3 weeks 6 to 12: balance, endurance, community mobility.

Phase 4 months 3 to 6: return to low-impact activities and work demands.

Readiness to progress

  • Pain controlled, and wound healing satisfactory
  • Stable gait and safe stair negotiation
  • Strength and balance targets met

Long-term care

  • Maintain strength and a healthy weight
  • Avoid repeated high-impact loads unless cleared
  • Attend regular reviews as advised

Australia snapshot

  • Fusion remains common. Total ankle replacement is offered in larger centres.
  • High satisfaction in carefully selected patients
  • Public and private pathways provide rehabilitation support

Latest insights

Prehab and early safe walking set the tone for recovery.

Strength and balance predict independence more than implant brand.

Frequently Asked Questions

Recent studies have shown that as high as 90% of total ankle replacements remain intact at 10 years after surgery. The longevity of ankle replacement appears to be better in patients with less ankle deformity before surgery, as well as in those over the age of 50.

Ankle replacement is a major surgery. Although it works very well in most cases, some patients may have problems, and your surgeon will outline these risks.

Most patients go home on the same day as their surgery. Ankle replacement is performed under regional anesthesia. Most patients receive a nerve block that lasts at least 72 hours. The surgery takes about two hours and results in a small, approximately 10-15cm scar at the front of the ankle.

Once the swelling subsides and the surgical wounds on your foot are stable, you will be put in a plaster cast and can use crutches to get up and go home. The physiotherapist will show you how to walk with crutches. Physio will get you up as soon as possible! Most people are in the hospital for 2-3 days.

Modern implants have good long-term results in selected patients. Longevity depends on alignment, activity, bone quality and implant technology. According to recent studies, an ankle replacement can last for around 10 years.

Most daily tasks are comfortable. Deep kneeling and heavy squats are approached carefully.

When walking is steady and reaction times are safe. Confirm with your team and insurer.

Sometimes. A joint card is available but not required.

Walking, cycling, swimming, and golf are common choices. Running is a case-by-case decision.

Fusion reduces pain well and suits some patterns. Replacement preserves motion. The decision depends on goals and anatomy. Both approaches come with their advantages and disadvantages.