Many adults are surprised to learn they have flat feet. Sometimes, it is discovered during a routine exam. Other times, it becomes noticeable when the arch appears to collapse or when new aches develop in the feet, knees, or lower legs.
If you have noticed your arches flattening over time, you may wonder whether it is something that needs treatment. The answer depends on several factors. Flat feet in adults are common, and not every case requires intervention. However, certain patterns can signal that the foot’s support system is under strain.
Understanding the difference can help you know when to monitor the condition and when it is time to see a podiatrist in Maryland.
What Are Flat Feet?
Flat feet occur when the arch of the foot lowers or collapses so that most or all of the sole touches the ground while standing. Some individuals are born with flatter arches, while others develop the condition gradually over time.
The arch plays an important role in absorbing shock and distributing body weight during walking. When that structure changes, it can alter how pressure moves through the foot and up the rest of the body.
Not all flat feet behave the same way. In adults, we typically classify them into two general types.
Flexible Flatfoot vs Rigid Flatfoot
Flexible Flatfoot
Flexible flatfoot is the most common type. In this situation, the arch appears when the foot is off the ground but flattens when weight is placed on it.
Many people with flexible flat feet experience no symptoms at all. For others, the change in alignment can gradually create strain in surrounding structures.
Rigid Flatfoot
Rigid flatfoot is less common but more concerning. In this case, the arch remains flattened whether the foot is bearing weight or not.
Rigid flatfoot may be associated with joint stiffness, arthritis, or structural abnormalities. Because the foot loses its ability to adapt during walking, pain and mobility limitations are more likely.
Distinguishing between these two forms is an important part of evaluation.
Why Some Adults Develop Fallen Arches
Flat feet are not always present from childhood. Many adults notice changes in their arches later in life. One of the most common reasons is strain on a key stabilizing structure in the foot called the posterior tibial tendon.
This tendon runs along the inside of the ankle and helps support the arch during walking. When it weakens or becomes inflamed, the arch can gradually collapse. This condition is known as posterior tibial tendon dysfunction.
Over time, the following factors may contribute to arch collapse:
- Age-related weakening of supportive tissues
- Repetitive stress from standing or walking on hard surfaces
- Weight changes that increase pressure on the foot
- Prior injuries affecting foot alignment
As the arch lowers, the mechanics of walking shift. This can affect not only the foot but also the joints above it.
How Flat Feet Can Affect Knees, Hips, and Alignment
When the arch collapses, the foot often rolls inward more than usual during walking. This motion, called overpronation, changes how the leg rotates.
Over time, the altered alignment may contribute to discomfort in other areas, such as
- The inside of the ankle
- The knees
- The hips
- The lower back
Not every person with flat feet develops these symptoms. However, when pain does appear in multiple joints, the feet are often an important part of the overall picture.
Are Flat Feet Dangerous?
Flat feet are not inherently dangerous. Many adults live comfortably with flatter arches and never require treatment.
However, flat feet can become problematic if they lead to persistent pain, progressive deformity, or strain on supporting tendons. When symptoms develop, evaluation is helpful to determine whether the foot’s structure is placing excess stress on certain tissues.
Early management can often prevent more significant issues later.
Can Flat Feet Develop Later in Life?
Yes, flat feet can develop in adulthood. This is often referred to as adult acquired flatfoot.
In many cases, the change occurs gradually as the posterior tibial tendon weakens or the ligaments supporting the arch stretch over time. Some individuals first notice that one foot appears flatter than the other or that shoes begin wearing unevenly.
Early stages may produce mild fatigue in the arch area. As the condition progresses, the arch may collapse further and pain may develop along the inside of the ankle or foot.
Recognizing these changes early allows for more conservative treatment options.
Custom Orthotics vs Over-the-Counter Inserts
Supportive devices are often part of managing symptomatic flat feet, but not all inserts provide the same level of support.
Over-the-counter inserts can help cushion the foot and provide mild arch support. For individuals with minimal symptoms, these may offer temporary relief.
Custom orthotics are designed specifically for your foot structure and walking pattern. Because they are tailored to your biomechanics, they can provide more precise support and redistribute pressure more effectively.
In many cases, properly fitted orthotics can reduce strain on the posterior tibial tendon and improve alignment during walking.
At Family Podiatry of Maryland, orthotics are used as part of a broader treatment strategy rather than a one-size-fits-all solution.
When Flat Feet May Require Treatment
Flat feet should be evaluated when symptoms begin to interfere with daily activity. Certain warning signs may suggest the condition is progressing.
Consider scheduling an evaluation if you notice:
- Persistent pain along the inside of the ankle or arch
- Increasing flattening of the foot
- Swelling near the ankle tendon
- Difficulty standing or walking for long periods
These symptoms may indicate strain on the structures that support the arch.
When to See a Podiatrist in Maryland
You should consider seeing a podiatrist if flat feet are accompanied by pain, instability, or noticeable changes in foot shape.
An evaluation allows us to assess alignment, tendon function, and joint mobility. In many cases, early treatment focuses on conservative care such as supportive footwear, targeted strengthening, or custom orthotics.
Surgical treatment is rarely the first step and is generally considered only when structural damage or progressive deformity is present.
The goal is to support the foot’s natural mechanics and prevent further strain.
A Practical Takeaway
Flat feet in adults are common and often harmless. Many people have lower arches without experiencing any problems.
However, when fallen arches lead to pain or progressive changes in foot structure, it is worth investigating further. Early evaluation can help identify whether the issue is simple alignment strain or a developing tendon problem.
Contact a podiatrist in Maryland so we can help determine the best path forward, often with conservative care that supports comfort and long-term mobility.