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Near‐nerve needle sensory conduction study of the medial calcaneal nerve: New method and report of four cases of medial calcaneal neuropathy
Author(s) -
Seo JeongHwan,
Oh Shin J.
Publication year - 2002
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.10264
Subject(s) - antidromic , medicine , orthodromic , nerve conduction velocity , sensory nerve , anatomy , nerve conduction study , entrapment neuropathy , anesthesia , nerve conduction , sensory system , electrophysiology , surgery , neuroscience , carpal tunnel syndrome , biology
Abstract There has been one previously published antidromic method for studying medial calcaneal nerve (MCN) conduction. However, the origin of the compound nerve action potentials (CNAPs) with this technique is uncertain because of the antidromic nature of stimulation. We report a new orthodromic method for MCN conduction study using the near‐nerve needle technique. In 35 normal controls, maximum nerve conduction velocity (NCV) and negative‐peak NCV of MCN were 42.4 ± 3.9 m/s and 33.6 ± 3.0 m/s, respectively. The amplitude of the CNAP was 4.1 ± 2.2 μV. We also report four cases of medial calcaneal neuropathy, three of which were confirmed by this technique. We conclude that the present technique is capable of recording the sensory nerve action potentials of MCN in isolation and confirming the diagnosis of medial calcaneal neuropathy electrophysiologically. © 2002 Wiley Periodicals, Inc. Muscle Nerve 26: 654–658, 2002