Adult Acquired Flatfoot Deformity (AAFD)
If you have noticed your foot starting to flatten, your ankle rolling inward, or pain along the inside of your foot, you may be experiencing adult acquired flatfoot deformity (AAFD). This condition develops over time and can worsen if left untreated, making early recognition important.
Adult acquired flatfoot deformity is most often caused by posterior tibial tendon dysfunction. This tendon plays a key role in supporting the arch of the foot, and when it becomes weakened or damaged, the arch can gradually collapse.
What Is Adult Acquired Flatfoot Deformity?
Adult acquired flatfoot deformity, also called progressive collapsing foot deformity (PCFD), is a condition in which the arch of the foot gradually flattens over time.
Unlike flat feet that are present from childhood, this condition develops in adulthood and is often progressive. As the tendon weakens, the foot may change shape, affecting how you walk and stand.
Common Signs and Symptoms of AAFD
Symptoms usually start gradually and can become more noticeable over time.
Pain Along the Inside of the Foot and Ankle
One of the earliest signs is pain or tenderness along the inside of the ankle or arch, especially during or after activity. You may also notice swelling in this area.
Flattening of the Arch
As the condition progresses, the arch of the foot may begin to collapse or appear lower than usual. Some patients describe their foot as looking “flatter” or feeling less supported.
Ankle Rolling Inward
You may notice your ankle starting to roll inward, which can affect your balance and walking pattern. This change can place additional stress on the foot and surrounding structures.
Pain on the Outside of the Foot
In more advanced stages, pain may shift to the outer side of the foot or ankle as the condition progresses and the foot’s structure changes.
Difficulty Walking or Standing for Long Periods
As the arch loses support, walking may become uncomfortable. Some people experience fatigue, weakness, or difficulty pushing off when walking. You may also find it harder to stand on your toes on one foot.
When to See a Specialist for Possible AAFD
Early treatment of adult acquired flatfoot deformity can help prevent the condition from progressing and reduce the likelihood of long-term complications. If you’re experiencing any of the below symptoms, our care team specializes in conditions of the foot and is here to help.
It is important to seek care if you notice:
- Persistent pain along the inside of your foot or ankle
- Visible flattening of your arch
- Changes in how you walk or stand
- Swelling that does not improve with rest
- Difficulty with daily activities due to foot discomfort
What Are the Treatment Options for AAFD?
Treatment for adult acquired flatfoot deformity depends on the severity of the condition and your symptoms. Our board-certified orthopedic surgeons can offer more insight into the treatment option that’s best for you.
Non-Surgical Treatment
Many of our patients improve with conservative care, especially when AAFD is caught early. These approaches aim to reduce strain on your tendon and improve function. Options may include:
- Rest and activity modification
- Supportive footwear or custom orthotics
- Bracing to support the arch
- Physical therapy to strengthen the foot and ankle
Surgical Treatment
If your AAFD symptoms do not improve with non-surgical care, or if the condition is more advanced, we may recommend surgery.
Surgical options may involve repairing or reconstructing the tendon, correcting alignment, or restoring the arch. The goal is to improve function and relieve pain so you can return to everyday activities and feel like yourself again.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.
Get the Right Treatment Plan for Adult Acquired Flatfoot Deformity
Adult acquired flatfoot deformity (AAFD) usually starts with mild symptoms, but it can progress over time if left untreated. Fortunately, paying attention to early warning signs and seeking care when something feels off can make a big difference in your outcome.
If you’re experiencing foot or ankle pain or noticing changes in your arch, our team specializes in foot and ankle surgery and can help guide you toward the best course of action. Call Seattle foot and ankle surgeon Jonathan Hall, MD, FAAOS today to learn more about adult acquired flatfoot deformity and which treatment could be right for you.