Yes, Morton's neuroma commonly causes toe numbness.
Morton's neuroma frequently results in toe numbness as a characteristic symptom of this condition, and this numbness often persists even after successful surgical treatment.
Clinical Presentation
Morton's neuroma is a benign enlargement of the common plantar digital nerve, most commonly affecting the third webspace (between the 3rd and 4th toes) and less frequently the second webspace. The condition presents with:
- Burning or shooting pain in the webspace extending to the toes
- Numbness in the affected toes - a hallmark feature
- Sensation of "walking on a pebble"
- Symptoms that worsen with weight-bearing activities 1
Evidence for Toe Numbness
The research evidence consistently demonstrates that numbness is an expected finding with Morton's neuroma:
Post-Surgical Numbness Prevalence
Multiple surgical outcome studies confirm that toe numbness is both a presenting symptom and a common postoperative finding:
- 66% of patients reported numbness in their toes at long-term follow-up (mean 15.3 years) after surgical excision 2
- 72% experienced numbness at average 15.3-year follow-up after neuroma excision 3
- Numbness patterns are "quite variable" and present in the majority of cases 4
Critical Clinical Point
The presence of sensory deficits (numbness) does not negatively influence clinical outcomes or patient satisfaction 3. Analysis showed no significant correlation between numbness and worse outcomes (p = 0.646), meaning patients can achieve good functional results despite persistent numbness.
Anatomical Basis
The numbness occurs because Morton's neuroma involves compression and pathological enlargement of the interdigital nerve itself. When the nerve is affected—whether by the disease process or surgical excision—sensory deficits in the distribution of that nerve are expected. Approximately 40% of cases show anatomical variations in either the nerve or webspace that may contribute to symptoms 2.
Clinical Implications
When evaluating a patient with suspected Morton's neuroma:
- Expect numbness in the affected webspace and adjacent toe surfaces as part of the clinical presentation
- Numbness alone should not be considered a treatment failure or complication
- Only 8% of patients report dysesthesia (abnormal/unpleasant sensation), which is more concerning than simple numbness 3
- The pattern of numbness corresponds to the distribution of the affected interdigital nerve
In summary, toe numbness is a defining clinical feature of Morton's neuroma, present both as an initial symptom and commonly persisting after treatment, without necessarily indicating poor outcomes.