Back Pain Doctor
Tarsal Tunnel Syndrome
Tarsal tunnel syndrome occurs when the tibial nerve is compressed in a narrow tunnel behind and below the bony bump on the inner side of the ankle. The nerve divides there into the branches supplying sensation to the sole, which is why symptoms are felt in the arch and underside of the foot rather than at the point of compression.
Assessment has two aims. The first is confirming the nerve as the source, using the pattern and character of the symptoms, sensory testing on the sole, and provocative tests including the Tinel sign, the dorsiflexion-eversion test and the triple-compression test. The second is finding a cause, because most cases have one and the outcome is better when it is identified. Tenosynovitis, ganglion cysts, varicose veins, accessory muscles, bone spurs, tarsal coalition, hindfoot alignment and previous ankle injury all feature. Ultrasound is the most useful test for this. Diabetes deserves specific mention: diabetic sensory polyneuropathy causes very similar symptoms, is far more common, usually affects both feet, and is also a risk factor for the entrapment itself.
First-line care is footwear and orthoses to offload the nerve, including a medial heel wedge where overpronation is contributing, alongside activity modification, physiotherapy covering calf stretching, tibialis posterior strengthening and nerve gliding, and simple analgesia. Medications for neuropathic pain and an ultrasound-guided corticosteroid injection are reasonable next steps, and the injection helps confirm the diagnosis as well as treat it. Where a ganglion or other lesion is compressing the nerve, treating that takes priority. Surgical decompression is considered for symptoms that do not respond, or earlier where there is weakness or wasting. Relapses and remissions are common with this condition, and not everyone gets complete relief from either conservative or surgical treatment, which is worth knowing at the outset.
Common symptoms
- Burning or shooting pain at the inner ankle, arch and sole
- Numbness or tingling on the sole of the foot
- Worse with prolonged standing or walking, and often at night
- Weakness or clawing of the toes in long-standing cases
Commonly seen in
Evidence for twelve treatment options in tarsal tunnel syndrome
This is not a fixed ladder or a package of treatments. Every option is assessed independently against this diagnosis, including treatments with limited direct research that may still be reasonable for a clearly defined tissue target. The evidence level, likely benefit, risks, cost and alternatives are weighed at consultation.
Foundation — diagnosis, education and rehabilitation
The part of care with the broadest relevance. For many people it is enough on its own; other options are judged against it, not automatically added after it.
Diagnosis, education and progressive rehabilitation Working out what is driving the pain, explaining what your imaging does and does not mean, and building a graded loading plan you can actually follow. First line, and a long trial
What it involves
Assessment to identify the likely pain source, an explanation of what the diagnosis means, adjustment of the loads that aggravate it, and a progressive strength and conditioning plan — with weight management where that is clinically relevant.
What the evidence shows
Conservative care is the mainstay: footwear and orthoses to offload the nerve including a medial heel wedge for overpronation, activity modification, calf stretching, tibialis posterior strengthening and nerve gliding. One review recommends a trial of at least 12 to 24 months before surgery is considered, unless there is wasting, motor involvement or an identified lesion.
Pairing reviewed 2026-09-13.
Where it fits for you
Where I start, alongside looking hard for a treatable cause. Diabetic polyneuropathy is the mimic that matters most and is assessed at the same time.
Muscle and symptom-modifying options
Useful only when the examination identifies the tissue they target or when short-term pain control creates a useful rehabilitation window.
Wet needling and trigger point injection (trigger point injection) A fine needle into a tender band of muscle, with a small volume of dilute glucose solution injected through it. Only if relevant
What it involves
The needle is placed into the tender muscle band and a small volume of 5% glucose with 0.02-0.08% lignocaine is injected. Often done in the same visit as your assessment, and usable where the tender area sits deeper. Dry needling — the same technique with nothing injected — is not offered here.
What the evidence shows
A search for dry needling, trigger point treatment, acupuncture and prolotherapy in tarsal tunnel syndrome returned six records and not one of them treats this condition with needling. Three are studies of surgical nerve decompression in diabetic neuropathy that happen to measure vibration sense, and the rest name tarsal tunnel syndrome only as something to exclude when assessing heel pain.
Pairing reviewed 2026-09-14.
Where it fits for you
Only where a separate tender band of calf muscle is reproducing part of the pain. It does nothing about the compression in the tunnel.
Ultrasound-guided injections Guidance means we can see the needle reach the target. What goes into the needle depends on the diagnosis. Good support
What it involves
The injection is performed under ultrasound so the needle can be watched into the target structure. What is injected is decided by the diagnosis — and corticosteroid is used sparingly, for the reasons set out below.
What the evidence shows
Corticosteroid injection into the tarsal tunnel is both therapeutic and diagnostic, and the response carries some prognostic information about whether decompression is likely to help. In 61 people with tarsal tunnel syndrome, an ultrasound-guided injection around the tibial nerve improved both symptoms and measured nerve conduction, and the authors use that response to predict who will do well from surgery (Iborra, Front Neurol 2023). Injection is described as a bridge to surgery rather than a replacement for it, since decompression remains the definitive treatment where a structure is compressing the nerve (Urits, Pain Ther 2020).
Pairing reviewed 2026-09-14.
Where it fits for you
Given under ultrasound, which also shows the causes worth finding: ganglion, varicose veins, accessory muscle, tenosynovitis. Not a substitute for decompression where a structural cause is compressing the nerve.
V-ACTOR vibration therapy (vibration therapy) Low-frequency vibration applied over tender muscle. Not a shockwave, despite sharing the machine. Only if relevant
What it involves
A vibration handpiece is moved over the tender muscle and fascia for a few minutes. It runs from the same STORZ MASTERPULS icon console as radial shockwave but is a separate handpiece delivering a different, gentler form of energy. No needles, no anaesthetic, no downtime.
What the evidence shows
A search for vibration therapy in tarsal tunnel syndrome returned no records at all. Every record that mentions vibration at this nerve is using vibration sense as a way of measuring the nerve, not as a treatment.
Pairing reviewed 2026-09-14.
Where it fits for you
Not a treatment for the compressed nerve, and not applied over it. Considered only where tight calf muscle is a separate contributor.
Energy-based treatment options
Radial pressure wave, focused shockwave and EMTT have different targets and different evidence. They are assessed separately rather than treated as one category.
Radial or focused shockwave? Read the overviewRadial shockwave (radial pressure wave) Broad treatment across tender muscle and fascia, close to the surface. Plausible — no studies
What it involves
A handpiece is moved over the tender tissue while ballistic pressure pulses are delivered, using a transmitter head chosen for the tissue — including heads shaped for fascia and for the muscle either side of the spine. The pulse is strongest at the skin and weakens with depth, so this is mainly a myofascial treatment, though it can reach deeper in some areas. No anaesthetic, no downtime, usually a course of sessions about a week apart.
What the evidence shows
No randomised trial of shockwave in tarsal tunnel syndrome. The published material is a case report in post-burn tarsal tunnel syndrome, and the nerve entrapment trial literature is carpal tunnel syndrome.
Pairing reviewed 2026-09-13.
Where it fits for you
Not offered as a treatment for this condition. Where plantar fasciitis is the actual problem, that is a different page and shockwave does have support there.
Focused shockwave (ESWT) A true shock wave converging at depth — for tendon, joint, ligament and bone. Plausible — no studies
What it involves
A focused system generates an acoustic shock wave that converges at a focal point set at a defined depth, concentrating the energy where the target is. This is the form we use for tendon, joint, ligament and bone. Typically four to six sessions about a week apart, no anaesthetic and no formal downtime.
What the evidence shows
No randomised trial in tarsal tunnel syndrome.
Pairing reviewed 2026-09-13.
Where it fits for you
Not offered as a treatment for this condition.
EMTT (magnetotransduction therapy) High-energy magnetic pulses applied over the area. Painless, no contact. Plausible — no studies
What it involves
You sit with the applicator positioned over the area for a short session. Painless, no gel or contact required, and usually delivered as a course — commonly alongside shockwave.
What the evidence shows
No published trial of EMTT in this condition.
Pairing reviewed 2026-09-13.
Where it fits for you
Not part of managing this condition.
Biologic and joint injection options
Each injection is assessed independently for the named diagnosis. Cost, uncertainty, likely benefit, risks and alternatives are part of the decision.
Platelet-rich plasma (PRP) Your own blood, concentrated and injected under ultrasound guidance. Plausible — no studies
What it involves
Blood is taken from your arm, spun to concentrate the platelets, and injected into the target under ultrasound guidance in the same appointment.
What the evidence shows
No published trial of PRP in tarsal tunnel syndrome.
Pairing reviewed 2026-09-13.
Where it fits for you
Not offered for this condition.
Prolotherapy (dextrose) A course of dextrose injections into and around the structure and its attachments. Only if relevant
What it involves
Hypertonic dextrose is injected at the tender ligament and tendon attachments, and into the joint where relevant, usually as a series of treatments a few weeks apart.
What the evidence shows
No outcome study of prolotherapy in tarsal tunnel syndrome. An anatomical paper maps the ultrasound approach to the lower part of the tunnel specifically so that prolotherapy, PRP and hydrodissection can be delivered there accurately, but it reports technique rather than results (Fernandez-Gibello, Healthcare 2024).
Pairing reviewed 2026-09-14.
Where it fits for you
Not relevant to this diagnosis. There is no painful attachment to treat, and the problem is space around the nerve.
Viscosupplementation (hyaluronic acid) A gel-like injection into an arthritic joint. Widely used, and genuinely contested. Not used here
What it involves
One or a short series of hyaluronic acid injections into the joint under ultrasound guidance.
What the evidence shows
A search for hyaluronic acid, hyaluronate or viscosupplementation at the tarsal tunnel or the tibial nerve returned no study of this treatment in this condition. A review of injections across the whole foot discusses hyaluronic acid for a Morton's neuroma but names nothing for the tarsal tunnel (Urits, Pain Ther 2020), and there is no joint here to inject.
Pairing reviewed 2026-09-14.
Where it fits for you
Not offered for this problem.
Nerve-targeted options
Relevant when examination identifies a superficial neuropathic pattern or a compressed peripheral nerve—not simply because pain is present.
Lyftogt perineural therapy (perineural injection therapy) A series of small dilute dextrose injections just under the skin, over tender superficial nerves. No dextrose trials
What it involves
Small injections of low-concentration dextrose, usually 5%, placed just beneath the skin along tender superficial nerves. Given as a series of short sessions.
What the evidence shows
Injection immediately around the tibial nerve at the ankle has been studied in 61 people and improved both symptoms and measured nerve conduction, but the fluid was dilute local anaesthetic given to confirm the diagnosis and predict the result of surgery, not dextrose given as a treatment (Iborra, Front Neurol 2023). No trial has tested a course of dilute dextrose here.
Pairing reviewed 2026-09-14.
Where it fits for you
Considered where burning and hypersensitivity in the sole persist and the compression itself has been dealt with. Framed as unproven at this nerve.
Ultrasound-guided nerve hydrodissection Fluid placed around a nerve to free it from the surrounding tissue. Emerging, not established
What it involves
Under ultrasound, fluid is placed in the plane around the nerve to separate it from the tissue that is tethering or compressing it.
What the evidence shows
Ultrasound-guided approaches to the tibial nerve at the ankle are described, but the outcome literature is small series and cadaveric work. The randomised hydrodissection evidence is in carpal tunnel syndrome and does not transfer.
Pairing reviewed 2026-09-13.
Where it fits for you
Discussed for persistent symptoms where no space-occupying lesion has been found and surgery is being avoided, framed as emerging. A ganglion or accessory muscle compressing the nerve needs treating on its own terms.
This is general information only and suitability is assessed individually. Treatments with limited or condition-dependent evidence may still be discussed, but only with clear explanation of the uncertainty, the expected benefit, risks, cost and alternatives. Red flags, progressive neurological symptoms or suspected serious pathology require a different pathway.
Every treatment above is described in full on the non-surgical treatments page, including what each one is used for and what the evidence supports. Ratings apply to the named diagnosis; an adjacent muscle, tendon, joint or nerve problem is assessed as a separate target.
Corticosteroid injection is reviewed separately for each diagnosis.
Cortisone reliably reduces pain in the short term, and that can be genuinely useful when pain is stopping you sleeping or moving enough to rehabilitate. Beyond that window the picture changes. A systematic review of 41 randomised trials and 2,672 participants found that corticosteroid injection reduced pain in the short term but that the effect reversed at intermediate and long term; in pooled analysis for lateral epicondylalgia the short-term effect was large (SMD 1.44, 95% CI 1.17 to 1.71) while no intervention was favoured at 26 weeks (-0.40, -0.67 to -0.14) and at 52 weeks (-0.31, -0.61 to -0.01) (Coombes, Lancet 2010). In a randomised trial in lateral epicondylalgia, 83 per cent of the corticosteroid group had completely recovered or much improved at one year against 96 per cent given a placebo injection, and recurrence ran at 54 per cent against 12 per cent; adding physiotherapy made no significant difference at one year (Coombes, JAMA 2013). In joints, repeated corticosteroid injections have been associated with cartilage loss. It does not repair anything.
So we do not build treatment plans around it. Where an injection is the right call, we review the specific diagnosis and target, discuss what is being injected and why, keep the number low, and pair it with the loading work that changes the longer-term course.
When we would still consider it
- Pain severe enough to block rehabilitation
- A clear inflammatory or bursal target on imaging
- A specific short-term goal — a trip, a procedure, a return to work
- Diagnostic use, where the response tells us where the pain is coming from
When a cortisone injection is worth doing, and when it is not
Other foot, ankle & lower leg conditions
Pain in the same area can come from more than one source, and the label matters less than what the examination and history point to. These are the other guides for this region.
Frequently asked questions
How is this different from plantar fasciitis?
Is there a scan that confirms it?
Will I need surgery?
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