What Causes Morton’s Neuroma? (And How to Treat It)

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Clinical podiatry examination of foot during Morton's neuroma assessment in Sydney clinic

Morton’s neuroma causes burning or shooting pain in the ball of the foot — most commonly between the third and fourth toes. It develops when the digital nerve running between the metatarsal bones is repeatedly compressed and the surrounding tissue thickens in response. Despite the name, it is not a tumour. It is a treatable nerve condition, and the earlier you address it, the simpler the treatment.

At ModPod Podiatry in Sydney, we see Morton’s neuroma regularly. This article explains the most common causes and the treatment options we use in clinical practice.

What Causes Morton’s Neuroma?

Morton’s neuroma develops from repetitive compression or irritation of the plantar digital nerve. Several factors drive this process:

Footwear

Narrow shoes squeeze the metatarsal heads together, trapping and compressing the nerve with each step. High heels shift body weight forward onto the forefoot, concentrating pressure through the nerve space. These are the most common identifiable causes — and the first thing we address at assessment.

Foot Structure and Mechanics

Flat feet cause the foot to pronate (roll inward) excessively during walking, which stresses the forefoot tissues. High-arched feet concentrate pressure under the metatarsal heads with each step. Bunions alter the load distribution of the forefoot in ways that increase nerve compression over time.

Repetitive Forefoot Loading

Running — particularly on hard surfaces such as concrete or asphalt — generates sustained impact forces through the forefoot. Cyclists in tight-fitting shoes, and people whose work involves prolonged standing, carry similar risk. Any activity that consistently loads the forefoot in constrictive footwear can contribute.

Trauma and Inflammation

A direct blow to the forefoot, or chronic inflammation from conditions such as rheumatoid arthritis, can irritate the digital nerve and initiate the thickening process. In many cases, Morton’s neuroma is the result of cumulative load rather than one identifiable event.

How Morton’s Neuroma Is Treated

Treatment depends on how long you have had symptoms and how severe they are. Most cases respond to conservative (non-surgical) management when addressed early.

Footwear Modification

Switching to shoes with a wide toe box and a low heel reduces the compression driving the condition. For mild or early-stage Morton’s neuroma, footwear changes alone can produce significant improvement.

Metatarsal Padding

A small metatarsal pad placed just behind the ball of the foot separates the metatarsal heads and offloads the compressed nerve. When fitted precisely by a podiatrist, it reduces symptoms noticeably within a few days. Placement matters — an incorrectly positioned pad can worsen rather than relieve pain.

Custom Orthotics

Custom orthotics address the biomechanical factors contributing to nerve compression. A prescription device with integrated metatarsal support redistributes forefoot pressure more evenly, reducing the load through the affected nerve space. Orthotics are particularly effective in patients with flat or high-arched feet who need ongoing correction of their foot mechanics.

Activity Modification

Reducing high-impact forefoot loading — particularly running on hard surfaces — during the initial treatment phase allows the nerve tissue to decompress and local inflammation to settle. We guide patients through a graduated return to activity as symptoms improve.

Cortisone Injection

When conservative treatment does not produce adequate improvement after several months, an ultrasound-guided cortisone injection into the nerve space can reduce inflammation. This is a referral-based procedure performed under imaging by a GP or specialist. Results vary — some patients achieve lasting relief; others require further management.

Surgery

Surgical excision of the neuroma is reserved for cases that have not responded to conservative or injection-based treatment. Surgery is effective, though it carries a small risk of permanent numbness in the toes and requires a recovery period of several weeks.

Why Early Treatment Matters

The longer Morton’s neuroma goes untreated, the more the nerve thickens and the harder it becomes to resolve with conservative measures. A neuroma treated in its early stages — when symptoms occur only in tight shoes — often responds well to footwear changes and padding alone. Waiting until symptoms are constant or occur during barefoot walking makes treatment considerably more involved.

Sydney’s urban running culture is a relevant factor here. Many of our patients run regularly on hard road and path surfaces. Cumulative forefoot impact on concrete and asphalt is a significant trigger. If you run regularly and are experiencing forefoot symptoms, an early assessment is worth the appointment.

Medicare and Private Health Cover

If your GP manages a chronic condition — including foot conditions that require ongoing care — you may qualify for an Enhanced Primary Care (EPC) plan. This provides a Medicare rebate for up to five allied health visits per calendar year, including podiatry. Private health insurance Extras policies from Medibank, BUPA, HCF, NIB, and most other major funds typically provide a rebate on podiatry consultations. We process health fund claims on the spot using HICAPS.

Frequently Asked Questions

Q: What does Morton’s neuroma feel like?
A: Burning or shooting pain between the third and fourth toes, with tingling or numbness in those toes, and the sensation of a pebble or lump in the shoe that eases when you take your shoe off. Pain typically worsens in narrow or high-heeled footwear and improves in flat, wide shoes.

Q: Can Morton’s neuroma be treated without surgery?
A: Yes — the majority of cases respond to conservative treatment, including footwear changes, metatarsal padding, and custom orthotics. Surgery is only considered when several months of conservative management have not produced sufficient improvement.

Q: How is Morton’s neuroma diagnosed?
A: Through a clinical examination including Mulder’s click test, where your podiatrist compresses the metatarsal heads and presses the affected interspace to reproduce your symptoms. Ultrasound imaging confirms the diagnosis and guides treatment planning when needed.

Q: Do orthotics help Morton’s neuroma?
A: Yes, particularly when foot mechanics are a contributing factor. Custom orthotics with metatarsal support reduce nerve compression by redistributing forefoot load. They work best alongside appropriate footwear changes.

Q: How long does treatment take?
A: Many patients notice improvement within four to six weeks of conservative treatment. Full resolution typically takes three to six months. The timeline depends on how long symptoms have been present and how consistently the treatment plan is followed.

See a Podiatrist in Sydney

For a full guide to Morton’s neuroma — including detailed information on diagnosis, all treatment stages, and what to expect at each step — read our comprehensive Morton’s neuroma guide.

Our podiatrists at ModPod are experienced in assessing and treating Morton’s neuroma at all five Sydney clinics: CBD, Mosman, Dee Why, Rose Bay, and North Ryde.

Book online to see a podiatrist at your nearest clinic.

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