Tarsal Tunnel Syndrome: Signs, Symptoms & Treatment

Tarsal tunnel syndrome is a foot nerve condition that can be easily missed but is important to your foot health and mobility. It occurs when the posterior tibial nerve is compressed in the tarsal tunnel. If missed or left untreated, the nerve can become pinched causing chronic pain, numbness, and loss of function. Knowing how to identify the first signs of tarsal tunnel syndrome can help you receive care and keep you moving.

The most common pain symptoms

Tarsal tunnel syndrome pain is often described as burning, sharp, or shooting. Pain typically occurs along the inside of the ankle and may radiate into the arch or bottom of the foot. Many people experience an increase in symptoms during exercise or following prolonged standing or walking.

In contrast to generalized foot pain, tarsal tunnel discomfort is usually localized along the tarsal tunnel and just behind the medial malleolus. Symptoms may vary throughout the day and may be worse at night or with more activity. Symptoms often improve with rest, but may return with movement or weight bearing.

Some positions of the ankle joint such as rolling too much inward or bending the ankle too much may increase pain. Positional sensitivity is a key symptom that differentiates tarsal tunnel syndrome from other causes of foot and ankle pain and should be assessed by a professional.

Numbness, tingling, and weakness

Loss of sensation or numbness along the bottom of the foot or toes, especially the first 3 toes, is a common symptom of tarsal tunnel syndrome. Tingling, numbness, or a pins-and-needles sensation often occurs with tarsal tunnel syndrome. Symptoms may be intermittent at first, but tend to become more constant as compression and irritation progress.

In more severe cases, muscle weakness may develop. This can affect balance, walking, and control of the foot. Some people may experience difficulty lifting the foot or toes which can affect gait and increase risk of falls. Noticing changes in sensation and function over time is key to early diagnosis and successful treatment.

What causes tarsal tunnel syndrome?

Foot structure

Flat feet can increase motion of the ankle joint inward, which can add stress to the nerve. High arches can also change foot motion and contribute to nerve irritation. Tight ligaments, bony abnormalities, or congenital deformities can narrow the tarsal tunnel and increase risk of compression.

Prior injuries such as ankle sprains or fractures may lead to swelling or scar tissue in the tunnel which can irritate the nerve.

Other medical conditions

Certain medical conditions have been linked to tarsal tunnel syndrome. Diabetes can increase the risk of nerve dysfunction and compression. Arthritis or other inflammatory conditions can cause swelling of soft tissues around the ankle which may pinch the nerve.

Activities that involve repetitive stress such as running or occupations that require prolonged standing can lead to aggravation of nerve irritation. Overweight can also place more strain on the foot and ankle.

Risks of delaying care

Delayed or untreated tarsal tunnel syndrome can result in ongoing nerve injury. Mild tingling or occasional pain may become constant, debilitating pain with reduced motion and muscle weakness. In chronic cases, permanent sensory changes and loss of function can develop.

As pain becomes more severe, people often alter their gait to reduce pain. This compensation can lead to new or increased problems in the knees, hips, and lower back which can delay recovery and extend treatment.

Impact on quality of life

Pain can significantly impact quality of life. Chronic foot pain often limits activities of daily living and may lead to activity avoidance. Ongoing discomfort can lead to fatigue, deconditioning, and emotional distress.

Persistent pain-related symptoms can also lead to increased anxiety, frustration, and social isolation. Treating tarsal tunnel syndrome early can help maintain mobility and independence.

Treatment

Conservative treatment of tarsal tunnel syndrome often starts with physical therapy. PT can help improve ankle stability, flexibility, and foot biomechanics while reducing pressure on the nerve. This may include stretching, strengthening, and balance exercises specific to your injury.

Footwear changes are also a key part of treatment. Shoes with good arch support and cushioning can reduce strain in the tarsal tunnel. Custom orthotics may be recommended to correct foot mechanics and redistribute pressure during weight bearing activities like standing or walking.

Medical & surgical options

When conservative treatment fails to resolve pain and symptoms, other medical interventions may be considered. Corticosteroid injections can reduce inflammation and provide temporary relief of symptoms. Surgical treatment may be an option when nerve compression is significant or persistent.

Tarsal tunnel release is a surgical procedure that relieves pressure on the tibial nerve by cutting the ligament that forms the roof of the tarsal tunnel. Surgical outcomes are generally good when performed in the right patients with appropriate selection and when nerve damage has not become chronic.

What to expect at your appointment

Your healthcare provider will start with a thorough medical history and physical exam. This includes asking about your symptoms and their pattern, prior injuries, shoes and habits, and other medical conditions. A focused exam of your foot and ankle will be performed to assess tenderness, swelling, and nerve sensitivity.

Diagnostic testing such as nerve conduction studies or electromyography may be performed to assess nerve function. Imaging such as MRI or ultrasound may be helpful to rule out other structural causes of nerve compression.

Questions to ask your provider

Knowledge is power and being informed and involved with your appointment is key. A few things to consider:

• What is the cause of my nerve compression?

• Are non-surgical treatments the best course for my condition?

• How long until I can expect recovery?

• What are the signs that I should follow up or consider other treatment?

Asking these and other questions that come to mind can help clarify your treatment and goals and may aid in your outcomes.

Conclusion

Tarsal tunnel syndrome is a common foot nerve injury which can be treated if caught early. Symptoms include burning pain, numbness, tingling, or shooting sensations in the arch, sole, or toes. Tarsal tunnel syndrome can often be caused by flat or high arches, ankle injuries, arthritis, diabetes, swelling, and repetitive stress. The condition is diagnosed by physical exam, history, and may include nerve studies or imaging to confirm nerve compression.

If symptoms do not improve after several weeks, are worsening, or are affecting function or daily activities, seeking medical care is recommended. Early treatment prevents long-term nerve damage.

It is important to have a good understanding of the condition, causes, risks, and treatment options for tarsal tunnel syndrome. This will allow you to be proactive in your foot health and maintain an active lifestyle without pain or discomfort. Early treatment is associated with better outcomes.

Frequently asked questions

What is tarsal tunnel syndrome?

Tarsal tunnel syndrome is when the tibial nerve is compressed in the tarsal tunnel on the inner ankle which causes pain and sensory changes in the foot.

What symptoms should I watch out for?

Common symptoms of tarsal tunnel syndrome include burning pain, numbness, tingling, or shooting sensations in the arch, sole, or toes of the foot.

What causes tarsal tunnel syndrome?

Flat feet, high arches, ankle injuries, arthritis, diabetes, swelling, and repetitive stress are some of the most common causes of tarsal tunnel syndrome.

How is tarsal tunnel syndrome diagnosed?

Tarsal tunnel syndrome is diagnosed by a physical exam and history from your provider. Nerve studies or imaging may also be performed to confirm nerve compression.

When should I seek treatment for tarsal tunnel syndrome?

If symptoms do not improve after several weeks, are worsening, or are limiting function or daily activities, medical care should be sought out to prevent further nerve damage.