Persistent pain and swelling along the inside of your ankle and arch isn’t just a passing ache. This discomfort often points to Posterior Tibial Tendon Dysfunction (PTTD), a progressive condition in which the main tendon supporting your foot’s arch becomes damaged from overuse or excessive strain from foot mechanics, such as flat feet.
If left unaddressed, this tendon damage can lead to the gradual collapse of your arch. Consequently, early management is vital to halt this progression. This process begins with identifying PTTD symptoms, which range from arch flattening to changes in your gait. From there, professional management options, such as custom foot insoles and rehabilitation exercises, focus on addressing these issues to preserve your mobility.
What is Posterior Tibial Tendon Dysfunction?
PTTD is a progressive condition that starts when the posterior tibial tendon becomes inflamed (posterior tibial tendonitis) or degenerates. The main job of this tendon is to hold up the arch of your foot. As the tendon gets damaged, it can no longer provide that support.
This loss of support results in the gradual collapse of the arch, a condition often called adult-acquired flatfoot. It typically begins with pain but can progress over time, leading to noticeable changes in your foot’s shape and affecting your mobility.
What Are the Symptoms of PTTD?
PTTD symptoms usually develop over time and can worsen if not addressed. The most common signs to look for are:
- Pain and Swelling: The primary symptoms are often aching pain and swelling along the inside of your ankle and arch. This follows the path of the tibialis posterior tendon.
- Arch Collapse: You may notice your arch visibly flattening. As the tendon weakens, it can no longer support the foot, causing the heel bone to drift outward.
- Changes in Walking: You may experience painful feet when walking, and activities such as climbing stairs or walking on uneven surfaces can become increasingly difficult.
- “Too Many Toes” Sign: As the arch collapses, the foot turns outward. A common sign is seeing more of your toes on the affected foot when viewed from behind.
- Pain Shifting Outward: In later stages, as the foot deformity becomes more rigid, pain can actually move to the outside of the ankle. This happens as other structures are strained by the change in your foot’s alignment.
What Happens if PTTD is Left Untreated?
Because PTTD is progressive, ignoring posterior tibial tendon dysfunction can lead to several serious outcomes:
- Progressive Flatfoot Deformity: The arch will likely continue to collapse. Over time, this can lead to a severe, rigid flatfoot deformity that permanently alters the shape of your foot.
- Worsening Pain and Instability: The pain rarely stays in one place. It often increases and spreads to other parts of the foot and ankle as nearby ligaments and joints are put under extra strain.
- Secondary Joint Problems: A change in your foot’s alignment affects your whole body. The altered way you walk can set off a chain reaction, leading to new issues in your knees, hips, and even your lower back.
- A Higher Chance of Surgery: In the final stages, the foot becomes stiff and non-surgical treatments are much less effective. At this point, reconstructive surgery may become the main option to restore function.
Professional Management for Posterior Tibial Tendon Issues
The primary goal of professional management for PTTD is to relieve pain and, most importantly, prevent further collapse of the arch. This involves resting the damaged posterior tibial tendon. A key part of this management is providing support for the foot and reducing strain through the use of custom foot insoles (orthotics).
In more acute or painful phases, a podiatrist might recommend a temporary Controlled Ankle Motion (CAM) walker boot. This device immobilises the foot and ankle, giving the inflamed tendon a chance to rest and the swelling a chance to subside.
Modalities like Shockwave Therapy may also be part of the plan. This method uses energy waves to help stimulate blood flow and promote natural healing within the damaged tendon tissue.
Finally, once the initial pain has settled, a podiatrist will typically introduce specific exercises to help the tendon recover, regain strength, and prevent a recurrence.
Protect Your Arch and Mobility
If you are experiencing pain on the inside of your ankle or notice your arch beginning to flatten, it’s advisable not to wait for the problem to worsen. A foot doctor in Singapore can conduct a podiatry assessment to clearly understand the problem and create a tailored management plan to address it.