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The Agility™ LP Total Ankle Replacement: An Alternative to Fusion

The Agility™ LP Total Ankle Replacement System is a patented, total ankle replacement that is based on over 20 years of clinical experience. It can be used as an alternative to traditional ankle fusion surgery. In fusion surgery, the ankle joint is removed allowing the tibia (shinbone) to grow together or fuse with the talus bone (the first large bone of the foot). Ankle fusion results in loss of up and down movement of the foot. The Agility LP Total Ankle System preserves natural joint movement and offers important benefits that you may want to discuss with your doctor. These benefits include:

  • Greater ankle support and longer-term stability than earlier implants
  • Multiple sizes for a more precise fit
  • More natural joint movement than is possible with ankle fusion surgery

What is the Agility LP Total Ankle System?

The Agility LP Total Ankle was designed by a team of orthopaedic surgeons to imitate the structure and movement of the natural ankle joint.

Image of the anatomy of the ankle alongside an image of the AGILITY Total Ankle System

The tibial component, which consists of a metal piece and a plastic piece, supports both the tibia and fibula as it bridges the space between these two bones. After surgery, more bone tissue grows in this space. The bone tissue surrounds and holds the Agility LP Total Ankle implant in place. This unique design creates a broad, solid base of support for the tibia and fibula in the new ankle. It helps limit the chance of future sinking, shifting or loosening of the implant. The plastic spacer is made of extremely strong medical grade plastic that can withstand a great deal of pressure without wearing away.

Agility LP ankle replacement implant

The talar component of the implant sits in the talus bone in the foot and allows the foot to flex up and down.

The Agility LP Total Ankle implant is made in six sizes so surgeons can select the appropriate size for the patient. Proper sizing is especially important when rheumatoid arthritis or severe osteoporosis has caused extensive bone damage in the ankle.

Fourth Generation Total Ankle System based on over 20 years of clinical experience in Total Ankle Replacement:

Results with the Agility Total Ankle System

The main purpose of ankle replacement surgery is to relieve pain. One study followed patients who received the Agility Total Ankle implant between 1984 and 1993.1 The average age of patients at surgery was 63 years old. A total of 82 people were studied for up to 12 years after surgery. Some individuals had received Agility Total Ankle implants in both ankles.

The benefits of the Agility Total Ankle System were noted in this study:

  • No patient reported severe pain after recovery.
  • 55% of patients reported having no pain at all after recovery.
  • 95% of patients studied said they would choose to receive the implant again.
  • 96% of patients said they would recommend the surgery to a friend.
  • 79% of patients reported that they were “extremely satisfied” with their total ankle implants.

Who is a Candidate for Total Ankle Replacement Surgery?

Total ankle replacement is appropriate for people who have a serious ankle disease (also called an “end stage ankle disorder”) that has not responded to more conservative treatments. The diseases most common in the ankle are osteoarthritis, rheumatoid arthritis and post-traumatic arthritis.

As with any joint replacement, an ankle implant is usually reserved for mature patients (late middle age and beyond). This is because most joint implants are expected to last about 10 years. A person’s activity level is also an important consideration. Sports such as running or tennis that put a lot of stress on the ankle joint are not advisable with a total ankle implant.

Note:

Only an orthopaedic surgeon trained in total ankle replacement can provide advice about whether total ankle replacement surgery and the Agility LP Total Ankle System are right for you. See your physician to learn more.

Individual results with any medical treatment may vary from the outcomes mentioned in this article. Only an orthopaedic surgeon trained in total ankle replacement can provide advice about whether total ankle replacement surgery and the Agility LP Total Ankle System are right for you. Please consult with your physician about the advisability of any medical treatment that you are considering.  

Warnings and Precautions:

The Agility LP Total Ankle System is indicated only for use with bone cement. Components labeled for "Cemented Use Only" are to be implanted only with bone cement. The following conditions tend to adversely affect ankle replacement implants: excessive patient weight, high levels of patient activity, likelihood of falls, poor bone stock, metabolic disorders, disabilities of other joints.

Adverse Events:

The following are the most frequent adverse events after ankle arthroplasty: loosening of components, dislocation and infection.

References

1. Callaghan, John J. MD, Pyevich, Michael T. MD, and Saltzman, Charles L. MD. “Total Ankle Arthroplasty: A Unique Design. Two to twelve year follow-up” Journal of Bone and Joint Surgery, Vol. 80-A, No. 10, Oct. 1998:1410-1419.

Last Updated: 09/03/2008