TRIPLE ARTHRODESIS

Fusion is locking the bones together. A triple arthrodesis is a fusion in the hindfoot (back of the foot) used to treat many types of painful foot deformities. This procedure fuses the joints under the ankle that allow the foot to move from side to side. These joints are the talonavicular, subtalar, and calcaneocuboid.

Surgeons try to avoid fusions, but sometimes pain and deformity are so severe that this procedure offers the best chance of producing a less painful foot with better alignment. Fusions often improve stability and allow for easier standing and walking. The hindfoot fusion is a time-tested, durable procedure.

A hindfoot fusion is indicated for severe arthritis, instability, or a deformity that cannot be controlled with non-surgical treatments. Other conditions, such as severe flatfoot, abnormal connections between bones, excessively high arches, and joint instability due to neuromuscular disease, also can indicate the need for a fusion. 

SURGERY
In a triple arthrodesis, your foot and ankle orthopaedic surgeon makes one incision on each side of the foot, and works in each joint, removing cartilage, roughening bony surfaces, and filling defects. Once all the desired joints have been prepared, they are put into an appropriate position and hardware is placed to stabilize the reconstruction and promote healthy fusion.

COMPLICATIONS
All surgeries come with possible complications, including the risks associated with anesthesia, infection, damage to nerves and blood vessels, and bleeding or blood clots.

Most patients are satisfied with their outcome once they achieve successful fusion. In fact, most feel that the loss of motion is a very acceptable trade-off for pain reduction. In the first two to three weeks, the most likely complication is wound breakdown and/or infection. These are best avoided by not smoking, elevating the foot, avoiding any weight on the foot, and keeping the surgical dressing clean and dry.

The most common long-term consequence of triple arthrodesis is gradual development of arthritis in other joints of the foot and ankle. These changes can take years or even decades to develop and many never become noticeable to the patient. 

FREQUENTLY ASKED QUESTIONS
  • Will I have stiffness after surgery?

    Yes, you can expect some degree of stiffness in your foot as a result of the surgery. You will maintain up-and-down motion, but side-to-side motion will become limited. This will be most noticeable on uneven surfaces but is usually a good trade-off for reasonable pain relief, improved stability and/or deformity correction. Many patients who undergo this surgery have a stiff, painful foot to begin with; after surgery the stiffness may remain but the pain will be relieved.

  • Will I be able to return to my usual activities?

    You can generally expect to return to most activities in life, but the stiffness in side-to-side motion will limit certain activities requiring this motion. 

  • When can I expect to have recovered from a triple arthrodesis?

    A significant amount of healing will occur in the first three months. However, it takes about one year for maximum improvement.

  • Are there side effects to triple arthrodesis?

    As one part of the foot is made stiffer, other structures are forced to accept more stress, which increases the chances that they may wear out. This often takes many years or decades to become noticeable.

  • Will I be able to fit into regular shoes?

    Typically patients fit into a shoe after surgery better than before surgery.

  • When will I be able to bear weight on my foot?

    Partial weight bearing typically is allowed once incisions have healed. Full weight bearing generally takes 2-4 months.

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Information provided by American Orthopedic Foot and Ankle Society (AOFAS) via FootCareMD.com