Tarsal Tunnel Syndrome Symptoms Causes Treatment and Relief

Tarsal tunnel syndrome affects a nerve that supplies feeling and movement to parts of the foot⁶. Pressure on this nerve may cause pain, tingling, numbness, weakness, or muscle damage⁶.

Symptoms may develop slowly or start after an injury². They can affect standing, walking, exercise, sleep, and daily movement^2,3.

Early care matters because severe or lasting pressure may cause permanent nerve damage². This guide covers common signs, causes, diagnosis, treatment, and ways to find relief.

This condition is a form of nerve compression behind the inner ankle^1,3. It affects the posterior tibial nerve or one of its branches^1,3.

These branches include the calcaneal, medial plantar, and lateral plantar nerves¹. They supply parts of the heel, sole, arch, and toes^1,3.

The nerve passes through a narrow space called the tarsal tunnel^3,6. Bones form the tunnel floor, while a firm tissue band covers it³.

The tunnel also holds blood vessels and several foot tendons^2,3. Swelling, scar tissue, or a growth can reduce the available space^2,7.

The condition has some features in common with carpal tunnel syndrome. Both involve pressure on a nerve within a small passage.

Symptoms may include pain, tingling, and weakness^2,7. They may appear after trauma or develop over months or years².

Common nerve symptoms may include:

Symptoms often worsen during standing, walking, or exercise^1,7,8. Rest or raising the leg may reduce them^1,7.

Symptoms can also become worse at night and disturb sleep^2,7. Severe or long-lasting cases may cause symptoms that remain present^2,8.

Numbness may become constant when severe nerve damage develops². Problems with foot movement tend to occur later^2,7.

Foot muscles may weaken or shrink in advanced cases^2,6. This damage may lead to curled toes, arch changes, or other foot shape changes^2,6.

Long-term nerve pressure may also affect walking^3,7. Untreated cases can cause lasting loss of feeling or toe movement⁶.

If feeling or toe control declines, contact a healthcare professional promptly⁶. Early diagnosis can improve the chance of controlling symptoms⁶.

Tibial nerve compression can come from inside or outside the tunnel^1,2. In some cases, no clear cause is found^2,6.

Ankle trauma can damage tissue or cause swelling around the nerve^2,6. Possible injuries include sprains, fractures, dislocations, and direct crushing injuries^2,6.

Past surgery may leave scar tissue near the nerve^1,3,7. Tight or poorly fitted footwear may also place pressure around the tunnel^1,7.

Repeated foot and ankle use can irritate the area^4,8. Running, hiking, dancing, sprinting, and jumping are listed as possible risk activities⁶.

Swelling in the lower leg can reduce space within the tunnel^3,7. Health problems that cause fluid buildup may add to this swelling^2,3.

A growth or inflamed tissue may crowd the nerve. Several local problems have links with this condition^1,2,7.

Possible causes inside the tunnel include:

The tibial nerve or one of its branches may be compressed within the tarsal tunnel^1,7. Poor blood flow may harm the nerve in some cases².

Several health conditions have links with tarsal tunnel syndrome. These include diabetes, low thyroid function, rheumatoid arthritis, and obesity^1,2.

Arthritis is among the conditions associated with tarsal tunnel syndrome^8,9. Diabetes has links with nerve damage and local nerve pressure^2,6.

Low thyroid function may cause swelling in the lower legs^2,3. Ankle swelling has occurred in a reported case of tibial nerve entrapment^3,7.

Foot shape can change how weight passes through the ankle². Ankle instability may affect tunnel loading and irritate the nerve^1,2.

A flat or pronated foot is not a proven direct cause in every case². However, foot shape may change gait and the forces placed on the ankle².

High arches and ankle instability have also been linked with nerve pressure^2,6. The role of foot shape can differ based on the cause.

No single test can confirm or exclude every case². Clinicians use the health history, physical exam, and supporting tests^1,2.

A clinician will ask where symptoms occur and what makes them worse. Past ankle injuries and the timing of symptoms may provide useful clues².

The examination may cover these areas:

The clinician may perform Tinel’s test by tapping over the tunnel. Tingling or pain along the nerve path is a positive result.

Tinel’s test has limited sensitivity, so it can miss some cases. No single diagnostic test can settle this diagnosis by itself^2,7.

Another exam is the dorsiflexion-eversion test. The clinician moves the foot upward and outward, then holds that position.

The result is positive if this position brings back the nerve symptoms. No physical exam finding provides a final answer in every case^2,7.

Imaging may find a growth or another cause of pressure^1,2. It can also help rule out other causes of foot pain.

Electrical nerve tests may support the diagnosis^1,2. These tests examine how electrical signals travel through the affected nerves.

Results must be reviewed with the symptoms and physical findings². No imaging or electrical test works alone in every case².

A clinician may inject a local numbing medicine into the tunnel². Short-term relief may support the diagnosis and guide care choices².

Several other problems can look like tibial nerve compression². A careful exam helps the clinician search for the likely source.

Conditions considered during diagnosis may include:

Contact a clinician if signs of tarsal tunnel syndrome develop⁶. Early care raises the chance that symptoms can be controlled⁶.

Arrange prompt care if numbness, weakness, or muscle loss gets worse³. These changes may occur with severe or long-term nerve damage^2,6.

Treatment depends on the cause, symptom level, and loss of foot function^6,7. Care often starts with methods that do not involve surgery^1,8.

The aims are to reduce pain, swelling, pressure, and tissue stress. A clinician may suggest more than one method.

First-line tarsal tunnel treatment may include:

Care should address an identified cause when possible^6,8. Treating local swelling may reduce pressure around the nerve.

A brace or shoe insert may change how the foot moves⁸. It may also limit motion that adds stress to the nerve⁸.

Nonsteroidal anti-inflammatory drugs are often shortened to NSAIDs. These medicines may reduce pain and swelling^6,8.

Ibuprofen is one over-the-counter example listed in the evidence⁸. Ask a healthcare professional whether an NSAID suits your needs.

A clinician may inject a numbing medicine or corticosteroid near the tunnel⁵. A numbing medicine may give short-term relief².

That response may also provide useful diagnostic information². A corticosteroid may reduce local swelling and pressure^2,9.

Relief may fade after the medicine wears off². The response can help guide later treatment choices².

Physical therapy may improve foot strength, motion, and flexibility^6,8. A therapist can select movements based on the symptoms and exam findings.

Activity changes are part of conservative care^1,6. Tell the therapist if an exercise brings on burning, tingling, or shooting pain.

Foot support may be combined with therapy¹⁰. This approach may help manage movement that increases nerve stress⁸.

Surgery may be considered when severe symptoms remain after nonsurgical treatment^1,8. Treatment of a growth such as a bone spur or lipoma may also relieve symptoms⁸.

Tarsal tunnel release is a type of nerve decompression surgery. The surgeon cuts the tight tissue that covers the tunnel.

This step creates more room for the tibial nerve. The surgeon may also remove a cyst, tumor, bone spur, or enlarged vein^7,8.

Surgery may include removing scar tissue from around the nerve. The exact procedure depends on the cause of pressure^7,8.

Research results need careful review. One scoping review included 32 studies of surgical decompression¹.

Across these cases, 75.3% had outcomes rated good or excellent¹. The other 24.7% had outcomes rated fair or poor¹.

However, the studies used varied methods and outcome measures¹. Age, cause, symptom length, and other health problems may affect results¹.

Researchers have examined whether factors present before treatment affect outcomes¹. Nerve fibrosis, which means thick nerve scarring, is another possible factor¹.

Results are not the same for every person. Discuss the possible benefits, limits, and recovery plan with the surgeon.

Home care may reduce stress on the ankle while you seek advice. It should not replace care for symptoms that keep getting worse.

Possible home steps include:

Different causes may need different care plans. Seek personal advice before changing a brace, insert, or therapy plan.

Symptoms can vary because many problems may cause nerve pressure². Treatment may improve symptoms⁸.

A long-term condition, such as arthritis, may need ongoing care⁸. Some people may have lasting pain or loss of feeling⁶.

Factors linked with treatment results include:

Severe untreated pressure may lead to lasting nerve damage^2,8. Possible effects include loss of feeling, foot shape changes, and reduced toe movement⁶.

Early assessment may limit long-term symptoms and loss of movement^2,3. It may also help guide treatment decisions².

No single method prevents every case⁸. However, some habits may lower avoidable stress on the foot and ankle.

Helpful habits include:

Watch how the foot responds when activity resumes. If nerve symptoms return and continue, contact a healthcare professional⁶.

Tarsal tunnel syndrome may cause burning foot pain, tingling, numbness, or muscle weakness^2,6. Injuries, growths, swelling, and health conditions may compress the tibial nerve^1,2.

Diagnosis uses symptoms, an exam, and supporting tests^1,2. No single test confirms or rules out every case².

Treatment often begins with rest, supportive footwear, shoe inserts, therapy, or medicine^1,8. Injections or tarsal tunnel release may help selected cases^1,2.

Early care may reduce the risk of lasting nerve damage^2,6. A stepwise plan can target both the pressure and its cause.