| Stage | Pathology | Symptoms | Imaging | Best Treatment |
|---|---|---|---|---|
| Early neuritis | Nerve inflammation; no fibrosis | Burning; tingling; shoe-triggered; resolves on removal | Normal or mild signal change | Wide shoes; metatarsal pad; orthotics |
| Established neuroma | Perineural fibrosis; enlarged nerve | Constant burning; Mulder’s click; numbness | Fusiform mass on MRI/ultrasound (>5mm) | Cortisone injection; sclerosing alcohol; surgery |
| Treatment | Success Rate | Best Candidate | Notes |
|---|---|---|---|
| Wide toe box shoe + metatarsal pad | 60–70% significant relief | Early neuritis; small neuroma | Pad placement is critical — proximal to MT heads |
| Custom orthotics with metatarsal raise | 65–75% | Any stage; recurrent neuritis | More reliable pad position than self-applied |
| Corticosteroid injection (US-guided) | 70–85% | Moderate neuritis; established neuroma | Repeat at 3–6 months; limit to 3 injections |
| Sclerosing alcohol injection (series) | 60–80% | Established neuroma; avoiding surgery | 3–7 injections; 2-week intervals; permanent effect |
| Surgical neurectomy | 85–90% | Failed conservative + injections; large neuroma | Permanent; 30% develop small dorsal numbness |
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatrist | Balance Foot & Ankle, Michigan | 5,000+ patients/year
Interdigital Neuritis vs. Morton’s Neuroma
Interdigital neuritis and Morton’s neuroma exist on a spectrum. Interdigital neuritis refers to reactive inflammation and nerve irritation without a discrete perineural fibroma; Morton’s neuroma describes the palpable thickened nerve (perineural fibrosis) that forms with chronic compression. Both produce similar symptoms — the distinction matters for treatment intensity decisions.
Symptoms
Burning pain and/or numbness radiating into adjacent toes (typically 3rd–4th, or 2nd–3rd web space), aggravated by tight footwear and forefoot loading, relieved by removing shoes and massaging the foot. A positive Mulder’s click — palpable click with lateral forefoot compression — suggests a true Morton’s neuroma. Numbness in the web space confirms nerve involvement.
Causes
Forefoot compression in narrow or high-heeled shoes is the primary mechanical cause. Metatarsal hypermobility, hallux valgus (pushing the lesser toes together), pes planus, and metatarsal stress reactions all contribute. Interdigital bursitis can mimic or accompany neuritis.
Treatment
First line: Shoe modification (wider toe box, lower heel), metatarsal pad placement (proximal to the affected web space to spread the metatarsal heads), and NSAIDs. Second line: Corticosteroid injection into the affected interspace. Third line: Sclerosing alcohol injections (70–80% success rate, avoid surgery). Fourth line: Surgical neurectomy (reliable pain relief but permanent numbness in the web space).
FAQs
Will interdigital neuritis go away on its own? Mild cases with shoe modification often resolve. Established Morton’s neuromas with perineural fibrosis do not spontaneously resolve without intervention.
In-Office Treatment at Balance Foot & Ankle
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.