Posterior femoral cutaneous nerve conduction

D. Dumitru, M. R. Nelson

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The posterior femoral cutaneous nerve is a sensory nerve comprised of fibers originating from the anterior and posterior divisions of the first three sacral segments. It exits the pelvis distal to the piriformis muscle and proceeds distally, superficial to and between the medial and lateral hamstring musculature. The nerve's major cutaneous distribution is the posterior aspect of the thigh and a variable area of the posterior calf. An electrophysiologic technique to assess the peripheral axons of the posterior femoral cutaneous nerve is described. A recording electrode is placed 6cm proximal to the midpopliteal fossa and the nerve is stimulated supramaximally 12cm proximally on a line between the active electrode and the ischial tuberosity. A ground electrode is placed just proximal to the active recording electrode. The lower extremities of 40 individuals with a mean age of 34 years (20 to 78 years) were examined. The mean peak latency of the response is 2.8 (2.3 to 3.4) msec ± 0.2msec with a mean amplitude of 6.5 (4.1 to 12.0) μV ± 1.5 μV. This technique may facilitate the proximal evaluation of lower extremity peripheral neuropathies, lesions of the posterior femoral cutaneous nerve, or the assessment of the peripheral nervous system in persons with lower extremity amputations.

Original languageEnglish (US)
Pages (from-to)979-982
Number of pages4
JournalArchives of Physical Medicine and Rehabilitation
Issue number12
StatePublished - Jan 1 1990
Externally publishedYes


  • Electromyography
  • Nerve conduction
  • Peripheral nerves

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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