Posterior Tibial Tendon Dysfunction

Pain and swelling along the inside of the ankle, progressive flattening of the foot, difficulty standing on tiptoe, and increasing discomfort while walking may be signs of Posterior Tibial Tendon Dysfunction. This condition affects one of the most important tendons responsible for supporting the arch of the foot.

Posterior tibial tendon dysfunction can progress over time. In the early stages, symptoms may mainly involve tendon pain and inflammation, while more advanced cases can lead to a progressive flatfoot deformity and changes in the alignment of the foot and ankle. Early orthopedic evaluation is important because treatment options depend significantly on the stage of the condition.

What Is Posterior Tibial Tendon Dysfunction?

The posterior tibial tendon runs from the muscles in the lower leg, passes behind the inner side of the ankle, and attaches to several structures in the foot. It plays an important role in supporting the medial arch and controlling the foot during walking.

When this tendon becomes weakened, elongated, or damaged, it may gradually lose its ability to support the arch effectively. As a result, the foot can begin to flatten and change position.

Posterior tibial tendon dysfunction is therefore more than a simple tendon inflammation. In progressive cases, it can affect the overall structure and mechanics of the foot and ankle.

What Is Progressive Collapsing Foot Deformity?

Posterior tibial tendon dysfunction has traditionally been used to describe many cases of adult-acquired flatfoot. However, the condition is now more broadly understood as a complex problem involving not only the posterior tibial tendon but also ligaments, joints, alignment, and other supporting structures of the foot.

For this reason, the term Progressive Collapsing Foot Deformity may also be used, particularly when structural changes extend beyond isolated tendon dysfunction.

The important point for the patient is that treatment should address the entire foot deformity rather than focusing only on one tendon.

Symptoms of Posterior Tibial Tendon Dysfunction

Symptoms depend on how advanced the condition has become. Early symptoms may be relatively subtle, while later stages can produce visible changes in foot shape and significant difficulty with walking.

Common symptoms may include:

• Pain along the inside of the ankle
• Pain along the inner side of the foot
• Swelling behind or below the inner ankle bone
• Increasing pain during walking
• Difficulty walking long distances
• Weakness when pushing off during walking
• Difficulty standing on tiptoe on one foot
• Progressive flattening of the foot arch
• The heel gradually turning outward
• The front of the foot appearing to move outward
• Uneven shoe wear
• Pain on the outside of the ankle in more advanced cases

Not every patient will experience all of these symptoms. The location of pain may also change as the deformity progresses.

Why Does the Inside of the Ankle Hurt?

The posterior tibial tendon passes directly behind the bony prominence on the inner side of the ankle. When the tendon becomes irritated or structurally damaged, pain and swelling can develop along this pathway.

Patients may initially notice discomfort after prolonged walking or standing. As tendon function deteriorates, pain may become more persistent and the arch of the foot may begin to lose support.

Pain around the inner ankle can also be caused by other conditions, so the location of pain alone is not sufficient to diagnose posterior tibial tendon dysfunction.

Why Does the Foot Become Flat?

The arch of the foot is supported by several bones, ligaments, muscles, and tendons working together. The posterior tibial tendon is an important dynamic supporter of this structure.

When the tendon can no longer perform its function effectively, other supporting structures may become overloaded. Over time, the arch can gradually collapse, the heel may move outward, and the alignment of the forefoot may change.

This explains why posterior tibial tendon dysfunction can progress from localized tendon pain into a more complex flatfoot deformity.

What Causes Posterior Tibial Tendon Dysfunction?

Posterior tibial tendon dysfunction may develop gradually as the tendon undergoes degeneration and loses strength. In some patients, several contributing factors may be present rather than a single identifiable cause.

Repetitive loading, individual foot structure, previous injuries, increased mechanical stress, and age-related tendon changes may contribute to the development or progression of the condition.

Because the underlying mechanics vary from one patient to another, treatment should be based on individual examination rather than symptoms alone.

How Is Posterior Tibial Tendon Dysfunction Diagnosed?

Diagnosis begins with a detailed orthopedic examination. The position of the foot while standing, height of the arch, heel alignment, tendon tenderness, ankle movement, muscle strength, and walking pattern are evaluated.

Examining the patient while standing is particularly important because some deformities become much more apparent when the foot is bearing weight.

The orthopedic examination also helps determine whether the deformity remains flexible or has become more rigid. This distinction can significantly influence treatment planning.

What Is the Single Heel Raise Test?

One of the clinical tests that may be used during evaluation is the single heel raise test. The patient attempts to rise onto the toes while standing on the affected leg.

The posterior tibial tendon plays an important role during this movement. Pain, weakness, difficulty performing the movement, or abnormal heel motion can provide useful information about tendon function.

However, no single clinical test should be interpreted in isolation. The complete examination and imaging findings should be considered together.

Why Are Weight-Bearing X-Rays Important?

Weight-bearing X-rays allow the foot and ankle to be evaluated while supporting the patient's body weight. This can provide important information about arch collapse, heel alignment, joint relationships, and the overall degree of deformity.

Because some structural changes may be less obvious when the patient is not standing, weight-bearing imaging can be particularly useful in the evaluation of progressive flatfoot deformity.

MRI, ultrasound, CT, or other imaging methods may also be requested in selected patients when more detailed assessment of the tendon, ligaments, joints, or bone structure is necessary.

Stages of Posterior Tibial Tendon Dysfunction

Posterior tibial tendon dysfunction can present at different stages. Understanding the stage is important because an early flexible deformity may require a very different treatment approach from an advanced rigid deformity with arthritis.

How Is Posterior Tibial Tendon Dysfunction Treated?

Treatment depends on the stage of the condition, severity of symptoms, flexibility of the deformity, condition of the tendon and ligaments, presence of arthritis, activity level, and individual patient factors.

Early-stage disease may often be managed initially with non-surgical treatment. More advanced structural deformities may require surgical reconstruction when symptoms remain significant and appropriate conservative treatment is insufficient.

For this reason, there is no single treatment that is appropriate for every patient with posterior tibial tendon dysfunction.

Non-Surgical Treatment

The goal of non-surgical treatment is to reduce symptoms, support the arch, decrease excessive stress on affected structures, and maintain function.

Can Posterior Tibial Tendon Dysfunction Heal Without Surgery?

Some patients, particularly in earlier stages, may achieve meaningful symptom control with appropriate non-surgical treatment. However, the structural changes that have already developed in a progressive flatfoot deformity may not simply disappear.

The goal of treatment may therefore include controlling pain, supporting the foot, improving function, and reducing further mechanical stress.

Patients with progressive deformity should be monitored because a treatment that is appropriate for an early flexible condition may not be sufficient if the foot becomes increasingly deformed or rigid.

When Is Surgery Considered?

Surgery may be considered when significant pain and functional limitations continue despite appropriate non-surgical treatment or when the deformity has progressed to a stage where surgical reconstruction is considered appropriate.

Surgical planning is based on the entire foot rather than the posterior tibial tendon alone. The position of the heel, condition of the arch, flexibility of the deformity, Achilles or calf tightness, ligament stability, joint condition, and tendon function may all influence the procedure.

This is why two patients with the same diagnosis may require different surgical approaches.

Posterior Tibial Tendon Surgery

In selected patients, treatment may involve repairing, reconstructing, or supporting damaged tendon structures. However, simply repairing the posterior tibial tendon may not be sufficient when a significant flatfoot deformity has already developed.

The underlying alignment of the foot may also need to be corrected so that reconstructed soft tissues are not exposed to the same abnormal mechanical forces.

Surgical treatment is therefore individualized according to the patient's deformity and the structures involved.

Flatfoot Reconstruction

In a flexible progressive flatfoot deformity, reconstruction may involve a combination of procedures rather than a single operation.

Depending on the individual deformity, surgery may include tendon procedures, ligament reconstruction, bone realignment procedures known as osteotomies, and treatment of calf or Achilles tightness when appropriate.

The objective is to improve alignment, create a more functional foot position, and reduce abnormal forces contributing to pain and progressive deformity.

When Is Fusion Surgery Considered?

When the deformity becomes rigid or significant arthritis develops in affected joints, reconstructive procedures designed for a flexible foot may no longer be appropriate.

In selected advanced cases, fusion of specific painful and deformed joints may be considered to improve alignment and stability and reduce pain.

The joints included in a fusion procedure depend on the location of deformity, arthritis, and symptoms. Fusion is therefore not automatically required for every patient with posterior tibial tendon dysfunction.

Recovery After Posterior Tibial Tendon Surgery

Recovery depends on the procedures performed. Because flatfoot reconstruction may involve tendons, ligaments, and bones, adequate healing time is required before the foot is exposed to full activity.

A period of protection and restricted weight bearing may be required depending on the operation. Weight bearing is then gradually progressed according to healing and follow-up findings.

Rehabilitation may focus on restoring ankle and foot movement where appropriate, rebuilding muscle strength, improving balance, and gradually returning to a functional walking pattern.

When Can I Walk After Surgery?

There is no single walking timeline for every posterior tibial tendon or flatfoot reconstruction procedure. A tendon procedure alone and a reconstruction involving several osteotomies or joint procedures require different recovery protocols.

The timing of weight bearing should therefore be determined according to the exact surgical procedure and evidence of healing during follow-up.

Can I Return to Sports?

Return to sports depends on the severity of the original deformity, type of surgery, bone and soft-tissue healing, strength, balance, mobility, and the demands of the chosen activity.

Low-impact activity may become possible earlier than running, jumping, or sports involving rapid changes of direction.

Return to sport should be gradual and based on functional recovery rather than a predetermined date.

What Happens If Posterior Tibial Tendon Dysfunction Progresses?

Progressive loss of tendon and ligament support can allow the arch to collapse further. The heel may move outward, the forefoot may change position, and the deformity may gradually become less flexible.

As alignment changes, pressure may develop in different parts of the foot and ankle. Some patients who initially experience pain mainly on the inside of the ankle may later develop pain on the outside because of altered mechanics and impingement.

Advanced deformity can eventually be associated with joint degeneration, which may change the available treatment options.

When Should You See an Orthopedic Specialist?

Persistent pain around the inner ankle or progressive changes in foot shape should not be ignored, particularly when they begin to affect walking and daily activities.

An orthopedic evaluation may be appropriate if you notice:

• Persistent pain behind the inner ankle
• Swelling along the posterior tibial tendon
• A gradually flattening foot arch
• Increasing difficulty walking
• Difficulty standing on tiptoe on one foot
• The heel turning outward
• Increasing shoe deformity or uneven wear
• New pain developing on the outside of the ankle
• Symptoms that continue despite supportive footwear or other treatment

Posterior Tibial Tendon Dysfunction Treatment in Antalya

Posterior tibial tendon dysfunction can range from early tendon pain to a progressive structural deformity involving the entire foot and, in advanced cases, the ankle. Determining the stage of the condition is therefore important before treatment is selected.

During an orthopedic evaluation, the posterior tibial tendon, foot arch, heel alignment, flexibility of the deformity, walking pattern, ligament stability, and joint condition can be assessed together with weight-bearing imaging when appropriate.

Depending on the findings, treatment may include non-surgical management, supportive devices, rehabilitation, tendon procedures, realignment surgery, flatfoot reconstruction, or other surgical options in appropriately selected patients.

Frequently Asked Questions About Posterior Tibial Tendon Dysfunction

Is posterior tibial tendon dysfunction the same as flat feet?

Not exactly. Posterior tibial tendon dysfunction can contribute to progressive flattening of the foot, but adult-acquired flatfoot may involve multiple tendons, ligaments, joints, and alignment abnormalities. The entire foot should therefore be evaluated.

Can posterior tibial tendon dysfunction cause the arch to collapse?

Yes. Loss of effective posterior tibial tendon function can contribute to progressive loss of arch support, particularly when other supporting structures are also affected.

Why is it difficult to stand on tiptoe?

The posterior tibial tendon plays an important role in controlling the foot during heel rise. Tendon dysfunction and progressive deformity may make a single-leg heel raise painful, weak, or difficult to perform.

Does posterior tibial tendon dysfunction always need surgery?

No. Non-surgical treatment may be appropriate, particularly in earlier stages. Surgery is considered according to symptoms, progression, deformity, response to conservative treatment, and the structures involved.

Can orthotics help posterior tibial tendon dysfunction?

Appropriate orthotic support or bracing may help support the foot and reduce abnormal stress in selected patients. The type of support required depends on the stage and flexibility of the deformity.

Can posterior tibial tendon dysfunction get worse?

The condition can be progressive in some patients. The arch may become flatter, alignment may change, and a flexible deformity can become increasingly rigid over time.

How is posterior tibial tendon dysfunction diagnosed?

Diagnosis is based on symptoms, physical examination, foot alignment, tendon function, and appropriate imaging. Weight-bearing X-rays are particularly useful for evaluating structural deformity.

What surgery is performed for posterior tibial tendon dysfunction?

There is no single operation for every patient. Depending on the stage and deformity, treatment may involve tendon procedures, ligament reconstruction, osteotomies, treatment of calf tightness, or joint fusion in selected advanced cases.

When should I seek treatment for a collapsing foot arch?

Evaluation is appropriate when a previously normal or mildly flat foot becomes progressively flatter, particularly when this is accompanied by inner ankle pain, swelling, weakness, or increasing difficulty walking.