Comparison of the electrophysiological characteristics of tight filum terminale and tethered cord syndrome.
Central motor conduction time
Motor evoked potential
Peripheral conduction time
Tether cord syndrome
Tight filum terminale
Journal
Acta neurochirurgica
ISSN: 0942-0940
Titre abrégé: Acta Neurochir (Wien)
Pays: Austria
ID NLM: 0151000
Informations de publication
Date de publication:
08 2022
08 2022
Historique:
received:
09
03
2022
accepted:
16
06
2022
pubmed:
6
7
2022
medline:
3
8
2022
entrez:
5
7
2022
Statut:
ppublish
Résumé
This study aims to characterize tight filum terminale (TFT) in motor evoked potential (MEP) testing by comparing TFT patients with both tethered cord syndrome (TCS) patients and healthy subjects. Fifty TFT patients, 18 TCS patients, and 35 healthy volunteers participated in this study. We recorded MEPs following transcranial magnetic stimulation from the bilateral abductor hallucis muscles as well as compound muscle action potentials and F-waves evoked by electrical stimulation of the tibial nerve from the bilateral abductor pollicis brevis muscles. The peripheral conduction time (PCT) was calculated from the latency of the compound action potential and F-wave. Furthermore, the central motor conduction time (CMCT) was calculated by subtracting PCT from MEP latency. TFT and TCS patients had a significantly longer MEP latency than healthy subjects. PCT in TFT patients was significantly longer than those in TCS patients or healthy subjects. Using the cutoff values for PCT, we were able to diagnose patients with TFT patients with a sensitivity of 72.0% and a specificity of 91.4%. Prolonged PCT in the MEP test may be a useful indicator for TFT and suggests that MEP may be used as an adjunct diagnostic tool for TFT.
Identifiants
pubmed: 35790608
doi: 10.1007/s00701-022-05298-4
pii: 10.1007/s00701-022-05298-4
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2235-2242Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.
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