We investigated peculiarities of the F waves elicited by stimulation of the median and ulnar nerves in 76 subjects having pronounced loss of cervical lordosis (LCL) and 42 control subjects. The CL angles in these two groups were 0–30 and 31–40 deg, respectively. As was found, the averaged minimum, maximum, and mean latencies and chronodispersion values of both median and ulnar F waves in most cases were slightly longer than in the control, but all intergroup differences were statistically insignificant. At the same time, the averaged median F wave persistence in both upper limbs of LCL patients was significantly smaller (P = 0.000) than that in control subjects. There was no such difference in the ulnar F responses. Recording of the median F wave can be used as an additional approach in diagnosing the LCL state.
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References
J. McAviney, D. Schulz, R. Bock, et al., “Determining the relationship between cervical lordosis and neck complaints,” J. Manipulative Physiol. Ther., 28, No. 3, 187–193 (2005).
S. Erkan, H. S. Yercan, G. Okcu, and R. T. Ozalp, “The influence of sagittal cervical profile, gender and age on the thoracic kyphosis,” Acta Orthop. Belg., 76, No. 5, 675–680 (2010).
K. Shimizu, M. Nakamura, Y. Nishikawa, et al., “Spinal kyphosis causes demyelination and neuronal loss in the spinal cord: a new model of kyphotic deformity using juvenile Japanese small game fowls,” Spine (Phila. PA, 1976), 30, No. 21, 2388–2392 (2005).
M. A. Fisher, “F-waves – physiology and clinical uses,” Sci. World J.,.7, 144–160 (2007).
D. M. Kado, M. H. Huang, A. S. Karlamangla, et al., Hyperkyphotic posture predicts mortality in older community-dwelling men and women: a prospective study,” J. Am. Geriatr. Soc., 52, No. 10, 1662–1667 (2004).
Y. Kuwazawa, M. Pope, W. Bashir, at al., “The length of the cervical cord: effects of postural changes in healthy volunteers using positional magnetic resonance imaging,” Spine (Phila. PA, 1976), 31, No. 17, E579– E583 (2006).
D. E. Harrison, D. D. Harrison, R. Cailliet, et al., “Cobb method or Harrison posterior tangent method: which to choose for lateral cervical radiographic analysis,” Spine (Phila. PA, 1976), 25, No. 16, 2072–2078 (2000).
L. Lippa, L. Lippa, and F. Cacciola, “Loss of cervical lordosis: What is the prognosis?” J. Craniovertebr. Junction Spine, 8, No. 1, 9–14 (2017).
D. E. Harrison, E. W. Jones, T. J. Janik, and D. D. Harrison, “Evaluation of axial and flexural stresses in the vertebral body cortex and Harrison trabecular bone in lordosis and two sagittal cervical translation configurations with an elliptical shell model,” J. Manipulative Physiol. Ther., 25, No. 6, 391–401 (2002).
Y. Fujimoto, Sh. Oka, N. Tanaka, et al., “Pathophysiology and treatment for cervical flexion myelopathy,” Eur. Spine J., 11, No. 3, 276–285 (2002).
F. Weber, “The diagnostic sensitivity of different F wave parameters,” J. Neurol. Neurosurg. Psychiatry, 65, No. 4, 535–540 (1998).
D. C. Preston and B. E. Shapiro, Electromyography and Neuromuscular Disorders. Clinical-Electrophysiologic Correlations (2nd ed.), Elsevier, 47–58 (2005).
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Neşe, G.Y., Yasemin, E. Diagnostic Value of the F-wave in Loss of Cervical Lordosis. Neurophysiology 52, 192–196 (2020). https://doi.org/10.1007/s11062-020-09870-5
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DOI: https://doi.org/10.1007/s11062-020-09870-5