Tarsal Tunnel Syndrome Explained

People who experience a sharp, electric zing shooting from the inner ankle into the sole of the foot usually think they’re dealing with plantar fasciitis, but this is often not the case. 

When the posterior tibial nerve gets squeezed inside a narrow passage on the inside of your ankle called the tarsal tunnel, it can fire off burning, tingling, and numbness. This is tarsal tunnel syndrome (TTS), and even though up to 43% of TTS cases trace back to a history of trauma like ankle sprains, this condition stays so underdiagnosed that many people live with a pinched nerve for months before getting real answers. 

Catching this foot condition early matters, because untreated nerve compression can lead to permanent damage and lasting weakness in the foot. Continue reading to get a better understanding of the anatomy of the tarsal tunnel, learn about its causes and risk factors, and where to find the best podiatrist in Los Angeles for tarsal tunnel syndrome treatment.

What is Tarsal Tunnel Syndrome?

The tarsal tunnel is a small passageway that sits along the inside of the ankle just beneath a thick band of tissue called the flexor retinaculum. Inside this tight space run tendons, blood vessels, and the posterior tibial nerve, which carries signals between the lower leg and the foot. 

Tarsal tunnel syndrome develops when that nerve becomes compressed or irritated as it travels through the tunnel. Even a small increase in pressure can interfere with the nerve’s ability to send normal signals, which is why symptoms often feel sharp, electrical, or burning instead of sore or achy. 

In some cases, the compression affects the nerve branches that extend into the heel and toes, which can make pain spread across the bottom of the foot. Many podiatrists compare TTS to carpal tunnel syndrome because both conditions involve a nerve trapped inside a narrow space. The difference is that TTS is much less common and often mistaken for other foot problems, especially in people who assume their pain comes from overuse or aging.

What Triggers and Risk Factors Can Cause Tarsal Tunnel Syndrome?

Anything that crowds the tarsal tunnel or increases pressure around the posterior tibial nerve can trigger TTS. 

• Flat feet are one of the most common causes because overpronation places extra strain on the structures along the inside of the ankle. 
• High arches can also create uneven pressure that irritates the nerve. 
• Some people develop symptoms because of growths or swelling inside the tunnel, including ganglion cysts, bone spurs, inflamed tendons, or enlarged veins. 
• Foot trauma can also cause TSS. A severe ankle sprain, fracture, or dislocation can change the shape of the tissues around the nerve long after the original injury heals. 
• Health conditions that increase inflammation or swelling can raise the risk as well. Diabetes, rheumatoid arthritis, hypothyroidism, gout, and even pregnancy-related fluid retention may contribute to nerve compression. 
• Repetitive stress from running, standing for long shifts, or high-impact exercise can also irritate the nerve over time, especially when combined with poor footwear or weak foot support.

Tarsal Tunnel Syndrome Symptoms: How to Tell if Your Foot Pain is Nerve-Related

Tarsal tunnel syndrome tends to create symptoms that feel very different from ordinary muscle soreness or heel pain. Many people describe: 

• Burning sensations
• Pins and needles
• Numbness
• Sudden electric shocks that travel from the inside of the ankle into the arch, heel, or toes

Some people notice that the bottom of the foot feels strangely sensitive or partially asleep. The discomfort often gets worse during long periods of standing, walking, or exercise because activity increases pressure on the irritated nerve. Symptoms may also flare up at night when the foot finally relaxes after a full day of movement. In early stages, rest can calm the irritation temporarily. 

How is Tarsal Tunnel Syndrome Diagnosed? 

Diagnosing TTS starts with a comprehensive foot exam that includes a conversation about your symptoms, activity levels, past injuries, and medical history. Imaging tests are often used to search for structural problems that may be compressing the nerve. An MRI or pedCAT CT can reveal cysts, tendon swelling, scar tissue, or bone abnormalities inside the tunnel. 

One of the hardest parts of diagnosing TTS is that many other conditions create similar symptoms. Plantar fasciitis, Morton’s neuroma, peripheral neuropathy, and lower back nerve compression can all mimic foot nerve pain. 

Tarsal Tunnel Syndrome Treatment Options

People looking for the best tarsal tunnel syndrome treatment in Los Angeles usually start with conservative treatments aimed at reducing pressure and calming inflammation around the nerve. This includes: 

• Home care that includes rest, ice, anti-inflammatory medications, and supportive footwear that stabilizes the foot and ankle
• Custom orthotics to correct flat feet or abnormal walking patterns that contribute to nerve irritation
• A walking boot or ankle brace can temporarily limit movement and allow inflamed tissues to settle down
• Corticosteroid injections are sometimes used to decrease swelling near the nerve
• Regenerative treatments that reduce swelling and help the tissues of the nerves heal
• Physical therapy that guides proper stretching of tight calf muscles, strengthening the ankle, and performing nerve gliding exercises to improve mobility and reduce tension inside the tunnel

When symptoms continue despite months of conservative treatment, surgery becomes the best option. Tarsal tunnel release surgery involves cutting the tissue covering the tunnel to create more space for the nerve.

Finding the Best Podiatrist in Los Angeles for Tarsal Tunnel Syndrome Treatment

Everything from walking through the grocery store to staying active for your health relies on being comfortable on your feet. At our office in Beverly Hills, Dr. Soomekh provides advanced diagnosis, conservative treatment options, and expert foot and ankle surgery for patients dealing with persistent nerve pain and complex foot conditions. 

Because our practice operates outside the restrictions of insurance networks, we are able to focus fully on individualized care, treatment decisions, and direct access to specialized expertise without the delays and limitations. Whether your symptoms are caused by an injury, years of walking on flat feet, or for no clear explanation at all, we build personalized treatment plans around the way you live, move, and recover. 

Ready to stop foot pain from interfering with daily life and get effective treatment from the best foot surgeon in Los Angeles?