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Fiber organization at the posterior spinal cord‐rootlet junction in man
Author(s) -
Sindou M.,
Quoex C.,
Baleydier C.
Publication year - 1974
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901530103
Subject(s) - spinal cord , anatomy , biology , neuroscience , nociception , fiber , proprioception , materials science , biochemistry , receptor , composite material
The authors have carried out serial section analysis in an attempt to elucidate the fiber organization at the posterior spinal cord‐rootlet junction in Man. In the peripheral segment of the rootlet, large and small caliber fibers have no particular organization. On the contrary, at the level of the spinal cord‐rootlet junction, small caliber fibers are re‐grouped in the ventro‐lateral region, whilst the large fibers are central and dorso‐medial. After consideration of published experimental data, which show that the small caliber fibers activate the nociceptive system, the authors have carried out in Man selective sections of the small fibers for antalgic reasons. These selective posterior rootlet sections ‐ operation called selective posterior rhizidiotomy ‐ result in an analgesia without suppression of tactile epicritic and conscious proprioceptive sensitivities.