Tarsal tunnel syndrome is a nerve compression problem that causes pain, tingling, or numbness on the inside of the ankle that can spread into the heel and along the sole of the foot. The tibial nerve passes through a narrow tunnel behind the inner ankle bone, and when that nerve gets squeezed, symptoms follow the path of the nerve. That path is why the discomfort often runs from the ankle down toward the toes rather than staying in one spot.
Where Does Tarsal Tunnel Syndrome Hurt From Ankle to Foot?
The pain starts at the inside of the ankle, just behind and below the bony bump on the inner side. That bump is the medial malleolus. The tibial nerve runs through a fibrous tunnel right behind it.
From there, symptoms travel along the nerve’s branches. The nerve splits into the medial plantar nerve and the lateral plantar nerve, plus a small calcaneal branch. Each one serves a different part of the foot.
- Medial plantar nerve: supplies feeling to the big toe side of the sole and the first three toes
- Lateral plantar nerve: supplies the little toe side of the sole and the outer toes
- Calcaneal branch: supplies the heel
That branching explains the symptom map. People often feel burning or tingling along the arch, into the ball of the foot, or toward the toes. Some feel it mostly in the heel. Others describe a vague ache that moves around.
One detail that surprises many people: the pain can feel like it is coming from the bottom of the foot even though the problem is at the ankle. The nerve is compressed at one point, but the symptoms show up wherever that nerve travels.
What Does Tarsal Tunnel Syndrome Feel Like?
The most common sensations are burning, tingling, or a pins-and-needles feeling on the inner ankle and sole. Some people describe a dull ache or a feeling like the foot is asleep.
Numbness is common too. It usually follows the same pattern as the tingling. Sharp, shooting pain can occur, especially with certain movements or positions.
Symptoms often get worse with standing, walking, or keeping the foot in one position for a long time. Many people notice it more at night. That night-time pattern is also seen in other nerve problems, so it is not unique to tarsal tunnel syndrome.
A key difference from some other foot conditions: the pain is often felt on both the ankle and the sole at the same time. Plantar fasciitis, by contrast, tends to concentrate at the heel and the bottom of the foot, especially with the first steps in the morning.
What Causes Pressure on the Tibial Nerve?
Anything that narrows the tarsal tunnel or takes up space inside it can press on the tibial nerve. The tunnel is already tight. It is formed by bone on one side and a tough fibrous band called the flexor retinaculum on the other.
Common causes include:
- Swelling from an ankle sprain or injury
- Flat feet, which can stretch the nerve
- Arthritis or bone spurs near the ankle
- Varicose veins or swollen blood vessels in the tunnel
- Ganglion cysts or other soft tissue growths
- Diabetes, which can make nerves more vulnerable
- Thyroid problems and other conditions linked to nerve swelling
Sometimes no clear cause is found. In those cases, doctors call it idiopathic.
It is worth noting that tarsal tunnel syndrome is much less common than carpal tunnel syndrome in the wrist, even though the two problems are similar in mechanism. Both involve a nerve squeezed in a narrow passage.
How Is Tarsal Tunnel Syndrome Diagnosed?
There is no single test that confirms tarsal tunnel syndrome. Diagnosis usually combines a physical exam, symptom history, and sometimes nerve studies.
During the exam, a doctor may tap lightly over the nerve behind the inner ankle. If that tap sends a tingling or shock-like feeling into the foot, it is called a positive Tinel sign. This is a common finding, but it is not perfect. Some people with the condition do not have it, and some without it do.
Nerve conduction studies and electromyography can help. These tests measure how well the nerve carries electrical signals. They can also help rule out other causes, like a pinched nerve in the back or peripheral neuropathy.
Imaging such as MRI or ultrasound may be used to look for cysts, tumors, or other structural causes. Not everyone needs imaging.
Because symptoms overlap with several other conditions, diagnosis can take time. Plantar fasciitis, peripheral neuropathy, and nerve root problems in the lower back can all produce similar foot symptoms.
How Does It Compare to Other Foot and Ankle Problems?
The location of the pain is often the biggest clue. Tarsal tunnel syndrome centers on the inner ankle and can spread into the sole. Other common foot problems tend to have different patterns.
| Condition | Typical pain location | Key feature |
|---|---|---|
| Tarsal tunnel syndrome | Inner ankle, heel, sole | Burning or tingling along nerve path |
| Plantar fasciitis | Bottom of heel | Worst with first steps in the morning |
| Peripheral neuropathy | Both feet, often symmetrical | Usually starts in toes, affects both sides |
| Lumbar nerve root problem | Radiates from lower back down leg | Often follows a dermatome, may include back pain |
This table is a guide, not a diagnosis. Only a clinician can tell these apart, and sometimes more than one is present.
What Treatment Options Exist?
Treatment usually starts with the least invasive options. The goal is to take pressure off the nerve.
Conservative approaches include:
- Rest and activity changes to reduce strain
- Ice to reduce swelling
- Orthotic shoe inserts, especially for flat feet
- Physical therapy to improve foot mechanics
- NSAIDs for short-term pain and inflammation relief
Some clinicians recommend corticosteroid injections into the tarsal tunnel to reduce swelling. The evidence for this is limited, and it is generally used for short-term relief rather than a cure.
If conservative treatment does not help, surgery may be considered. The procedure, called tarsal tunnel release, cuts the fibrous band to give the nerve more room. Outcomes vary. Some people get significant relief, while others continue to have symptoms. The evidence on how well surgery works is mixed, and results depend on the cause and how long the nerve was compressed.
No treatment is guaranteed. Anyone considering surgery should discuss the risks and realistic expectations with a specialist.
When Should You See a Doctor?
See a doctor if you have ongoing tingling, numbness, or burning in the ankle or foot that does not improve. Early evaluation matters because nerve compression that lasts a long time can lead to lasting nerve damage.
Also seek care if symptoms are getting worse, if they affect both feet, or if you have weakness in the foot. These signs could point to a different or additional problem.
If you have diabetes, thyroid disease, or a history of ankle injury, mention it. These can raise the risk of nerve problems and change how your symptoms are evaluated.
Frequently Asked Questions
Where exactly does tarsal tunnel syndrome hurt?
It typically hurts on the inside of the ankle and can spread into the heel, arch, and sole of the foot. The pain follows the path of the tibial nerve and its branches.
Does tarsal tunnel syndrome cause pain on the top of the foot?
Usually not. The tibial nerve supplies the bottom and inner side of the foot, so symptoms tend to stay on the sole and inner ankle. Top-of-foot pain more often points to a different nerve or condition.
Can tarsal tunnel syndrome go away on its own?
Some mild cases improve with rest, activity changes, and orthotics, but there is no reliable way to predict who will recover without treatment. Persistent or worsening symptoms should be evaluated by a doctor.
Is tarsal tunnel syndrome the same as plantar fasciitis?
No. They are different conditions with different causes, though both can cause foot pain. Tarsal tunnel syndrome involves nerve compression at the ankle, while plantar fasciitis involves inflammation of the tissue along the bottom of the foot.
