Utility of ultrasound-guided near-nerve needle recording for lateral femoral cutaneous sensory nerve conduction study: Does it increase reliability compared with surface recording?

George W. Deimel, Richard W. Hurst, Eric J. Sorenson, Andrea J. Boon

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Introduction: The aim of this study was to assess the reliability of a near-nerve needle recording technique in lateral femoral cutaneous nerve (LFCN) sensory nerve conduction studies (NCS). Methods: Bilateral LFCN sensory nerve action potentials (SNAPs) were recorded from 10 healthy volunteers using surface and near-nerve needle recording electrodes. Absolute amplitudes were compared side-to-side in each subject and between the 2 techniques. Results: Near-nerve needle electrode recording amplitude was significantly higher when compared with surface electrode recording (surface 9 μV, needle 58 μV; P < 0.0001), whereas side-to-side variability did not differ (surface 37%, needle 37%; P = 0.94). Conclusions: We propose that near-nerve needle recording is a simple technique to employ for clinicians with experience in ultrasound-guided needle placement, especially when evaluation is critical and responses are difficult to obtain. However, given the degree of side-to-side variability in healthy subjects, we recommend caution when interpreting side-to-side differences.

Original languageEnglish (US)
Pages (from-to)274-276
Number of pages3
JournalMuscle and Nerve
Volume47
Issue number2
DOIs
StatePublished - Feb 1 2013

Keywords

  • Lateral femoral cutaneous nerve
  • Needle recording
  • Nerve conduction study, reliability
  • Ultrasound

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)

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