Abstract
Flexion myelopathy is one of the suggested mechanism for Hirayama disease (HD) but simultaneous radiological and neurophysiological evaluation is lacking. This study therefore evaluates the effect of neck flexion in HD using somatosensory evoked potentials (SEPs), F waves, and magnetic resonance imaging (MRI). Eight HD patients and seven matched controls were subjected to median and ulnar F wave (minimal latency, FM ratio, persistence, and chronodispersion), and SEPs evaluating N9, N13, and N20 potentials in neutral and neck flexion. Spinal MRI was carried out in neutral and neck flexion and evaluated for cord atrophy, signal changes, cord compression, posterior epidural tissue, and loss of dural attachment. The patients were aged 19 to 30 years. Minimal F latency, FM ratio, persistence, and chronodispersion in neutral and neck flexion did not show any change nor was there any change in N13 latency and amplitude on median and ulnar SEPs. The difference in these parameters in neutral and neck flexion were also not significant in HD compared with controls. The change in N13 was also not related to loss of dural attachment and posterior epidural tissue. Neck flexion does not produce significant changes in N13 and F wave parameters...Continue Reading
References
May 1, 1978·Annals of Neurology·I SobueK Ando
Feb 1, 1990·Neurology·R TandanP Jacobsen
Feb 1, 1988·Brain : a Journal of Neurology·L M TangM Swash
Apr 1, 1995·Electroencephalography and Clinical Neurophysiology·U K Misra, J Kalita
Sep 15, 1996·Journal of the Neurological Sciences·G D GuglielmoA Uncini
May 24, 2000·Neurology·K Hirayama, Y Tokumaru
Jun 1, 2001·Journal of Neurology, Neurosurgery, and Psychiatry·J Kira, H Ochi
Mar 5, 2003·Acta Neurologica Scandinavica·M Gourie-Devi, A Nalini
Jun 25, 2003·Neurology·D RestucciaP Tonali
Jan 12, 2005·Archives of Neurology·U K MisraB Mittal
Citations
Jun 8, 2011·Der Nervenarzt·J-S KangU Ziemann
Sep 26, 2012·Journal of Neurology·Kai BoelmansCharly Gaul
Oct 23, 2008·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Angelo AmmendolaGioacchino Tedeschi
Nov 30, 2013·Journal of Neurosurgery. Spine·Igor ParedesJuan José Rivas
Dec 6, 2008·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Chiara CeramiVincenzo La Bella
Jul 15, 2011·Muscle & Nerve·Rong-Kuo LyuHong-Shiu Chang
Sep 26, 2013·BioMed Research International·Kaukab Maqbool Hassan, Hirdesh Sahni
Mar 15, 2015·Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia·Emma FosterAron Hill
Aug 22, 2013·Journal of the Neurological Sciences·A AbrahamS C Blumen
Jul 18, 2016·Journal of the Neurological Sciences·Chaojun ZhengJianyuan Jiang
Oct 26, 2018·Neurological Sciences : Official Journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·Jin-Sung ParkDonghwi Park
Jun 16, 2017·Amyotrophic Lateral Sclerosis & Frontotemporal Degeneration·Jayantee KalitaZafar Neyaz
Jan 18, 2019·Neurospine·Yi-Hsuan KuoJau-Ching Wu
Jan 8, 2021·Surgical Neurology International·Otto Hernandez FustesRosana Herminia Scola
Apr 3, 2021·World Neurosurgery·Siyang LiuJianyuan Jiang
Sep 12, 2021·Neurology India·Jayantee KalitaUsha K Misra