Fusion to treat a severe flatfoot deformity is called arthodesis. The bones are line up in a good position and screws, staples, and/or bone graft are used to hold it in place until fusion takes place.
The exact procedure depends on which bones are affected and how far away they are from the normal position. Bracing with an orthosis is usually designed to keep a joint from moving. With a fusion, the joint is already immobile.
The first thing to do is find out what is the cause of your pain. An X-ray will show the status of your fusion. It’s possible the fusion has failed and motion is occurring at that site. This could lead to arthritis and may be the cause of your painful symptoms.
In that case, you may be a good candidate for medications, activity modification, or even a joint injection. A custom made orthosis to help realign the ankle and prevent motion may also be helpful. Surgery is a final option if conservative care isn’t successful.
Make an appointment with an orthopedic surgeon or podiatrist. The first step is having an evaluation and getting a proper diagnosis. Treatment can be decided on the basis of the underlying problem.