L4-L5-S1 human dermatomes: a clinical, electromyographical, imaging and surgical findings

There is substantial controversy in literature about human dermatomes. We studied L4, L5, and S1 inferior limb dermatomes by comparing clinical signs and symptoms with conduction studies, electromyographical data, neurosurgical findings, and imaging data from computerized tomography (CT) or magnetic...

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Bibliographic Details
Published in:Arquivos de neuro-psiquiatria 2009-06, Vol.67 (2A), p.265-267
Main Authors: Faleiros, Antonio Tadeu de Souza, Resende, Luiz Antonio de Lima, Zanini, Marco Antonio, Castro, Heloisa Amélia de Lima, Gabarra, Roberto Colichio
Format: Article
Language:English
Subjects:
Buttocks - innervation
Electromyography
Humans
Leg - innervation
Magnetic Resonance Imaging
NEUROSCIENCES
Peripheral Nerves - physiopathology
PSYCHIATRY
Radiculopathy - physiopathology
Radiculopathy - surgery
Tomography, X-Ray Computed
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Summary:There is substantial controversy in literature about human dermatomes. We studied L4, L5, and S1 inferior limb dermatomes by comparing clinical signs and symptoms with conduction studies, electromyographical data, neurosurgical findings, and imaging data from computerized tomography (CT) or magnetic resonance imaging (MRI). After analyzing 60 patients, we concluded that L4 is probably located in the medial aspect of the leg, L5 in the lateral aspect of the leg and foot dorsus, and S1 in the posterior aspect of the backside, tight, leg and plantar foot skin. This is the first time that these human dermatomes have been evaluated by combined analysis of clinical, electromyographical, neurosurgical, and imaging data.
ISSN:0004-282X
1678-4227
1678-4227
0004-282X
DOI:10.1590/S0004-282X2009000200017