Simple electrodiagnostic method for Morton neuroma

Elif Ilgaz Aydinlar, Metin Uzun, Burak Beksac, Vahit Emre Ozden, Ercan Karaarslan, A Emre Oge
Muscle & Nerve 2014, 49 (2): 193-7

INTRODUCTION: We describe a simple and quickly applied electrodiagnostic method for confirming the diagnosis of interdigital neuropathy caused by Morton neuroma (MN).

METHODS: Interdigital nerves II-III and III-IV were stimulated with surface electrodes simultaneously touching the lateral side of 1 toe and the medial side of the other. Recording was also made with surface electrodes. The results of 20 normal controls and 14 patients with MN were evaluated.

RESULTS: The amplitude and peak latency values elicited in the patients as well as the interside differences revealed an acceptable abnormality rate between 57.1% and 71.4%.

CONCLUSIONS: Although the most popular and effective method of MN diagnosis is clinical evaluation supported by imaging, electrophysiological studies can, in selected patients, provide valuable information.

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