Ankle replacement is surgery to replace the damaged parts of the three bones that make up the ankle joint. Artificial joint parts (prosthetics) are used to replace your own bones. They come in different sizes to fit different-size people.

Ankle arthroplasty - total; Total ankle arthroplasty; Endoprosthetic ankle replacement; Ankle surgery

Ankle replacement surgery may be done while you are under general anesthesia. This means you will be unconscious and unable to feel pain. Or, you may have spinal anesthesia. You will be awake but will not feel anything below your waist. If you have spinal anesthesia, you will also be given medicine to help you relax during the operation.

Your surgeon will make an incision (cut) in the front of your ankle to expose the ankle joint. Then your surgeon will gently push the tendons, nerves, and blood vessels to the side. After this:

• Your surgeon will remove the damaged bone.
• Your surgeon will reshape 3 of your bones that will remain in place:
  • The lower end of your shin bone (tibia)
  • The lower end of your smaller lower leg bone (fibula)
  • The top of your foot bone (talus) that the leg bones rest on
• The parts of the new artificial joint are then attached. A special glue may be used to hold them in place. Often, screws are also placed through the two leg bones (fibula and tibia) to help support the artificial ankle.
• A bone graft is created between the ends of the fibula and tibia. This makes your new ankle more stable.

After putting the tendons back into place, the surgeon closes the wound with sutures (stitches). You may need to wear a brace for a while to keep the ankle from moving.

Ankle replacement surgery may be done if the ankle joint is severely damaged. Your symptoms may be pain and loss of movement of the ankle. Some causes of damage are:

• Osteoarthritis
• Rheumatoid arthritis
• Bone fracture
• Arthritis caused by ankle surgery in the past

Images

Ankle anatomy

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Ankle replacement Risks

Review Date: 02/03/2009
Reviewed By: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Dept of Orthopaedic Surgery. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)