The Comparison of Multiple F-wave Variable Studies and Magnetic Resonance Imaging Examinations in the Assessment of Cervical Radiculopathy

Lin, Che-Kai; Tsai, Yuan-Hsiung; Chang, Chia‐Hao; Chen, Chien‐Min; Hsu, Hung‐Chih; Wu, Chun-Yen; Hong, Chang‐Zern

doi:10.1097/phm.0b013e31827d6546

Cited by 11 publications

(7 citation statements)

References 15 publications

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“…However, a retrospective study reviewing patients operated on for cervical radiculopathy during a 10-year period concluded neurophysiological testing had limited additional diagnostic value [42]. A recent study on the diagnostic utility of multiple F-wave variables in the prediction of cervical radiculopathy concluded there was a low correlation between F-wave studies and MRI examinations and could therefore not support its use as such [44].…”

Section: Strengths and Limitationsmentioning

confidence: 99%

Value of physical tests in diagnosing cervical radiculopathy: a systematic review

Thoomes¹,

Geest

Windt³

et al. 2018

The Spine Journal

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There is limited evidence for accuracy of physical examination tests for the diagnosis of cervical radiculopathy. When consistent with patient history, clinicians may use a combination of Spurling's, axial traction, and an Arm Squeeze test to increase the likelihood of a cervical radiculopathy, whereas a combined results of four negative neurodynamics tests and an Arm Squeeze test could be used to rule out the disorder.

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Section: Strengths and Limitationsmentioning

confidence: 99%

Value of physical tests in diagnosing cervical radiculopathy: a systematic review

Thoomes¹,

Geest

Windt³

et al. 2018

The Spine Journal

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show abstract

“…By means of the F-wave test, it is possible to isolate the damage of only one root due to the innervation of several root levels of muscles from which this response is recorded [2, 22]. Lin et al [23] carried out a detailed analysis of patients with cervical radiculopathy confirmed by an MRI at the C7 and C8 roots. They obtained F-wave recordings after a simulation of the median and ulnar nerves.…”

Section: Discussionmentioning

confidence: 99%

Motor Evoked Potentials after Supraspinal Stimulation in Pre- and Postoperative Evaluations of Patients with Cervical Radiculopathy

Bryndal

Wojtysiak

Moskal

et al. 2019

BioMed Research International

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Objective. Pre- and postoperative comparative evaluation of neurophysiological tests and clinical trials. Analysis of the diagnostic value of motor evoked potentials (MEP) induced by a magnetic field after supraspinal stimulation. Evaluation of the sensitivity and specificity of electromyography (EMG) and MEP is achieved. Methods. EMG, ENG, M-wave, F-wave, and MEP tests were performed on 35 patients with confirmed cervical radiculopathy in pre- and postoperative evaluations. The clinical trial consisted of evaluation of muscle strength, a sensory perception test and evaluation of tendon reflexes and pain severity. Results. The sensitivity of the resting EMG and MEP tests is 24%-67% and 6%-27%, while their specificity is 43%-80% and 86%-100%, respectively. The postoperative evaluation revealed a statistically significant reduction in pain severity (p=0001), an increase in muscle strength in DP (p=0.0431), BB (p=0,0431), and TB (p=0.0272), and improvement of touch sensation in terms of dermatomal innervation in C5 (p=0.0001) and C6 (p=0.0044). Conclusions. Tests comparing MRI sensitivity to neurophysiological tests show that neuroimaging is more sensitive in diagnostics of patients with cervical radiculopathy; however, clinical neurophysiology tests are more specific in reference to clinical trials.

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“…It is consistent with Lin's study. Lin et al showed that F wave latencies in patients with cervical radiculopathies were not significant when they were adjusted for height and age (6).…”

Section: Discussionmentioning

confidence: 99%

“…EDX, a neuro-physiological investigation, detects functional abnormalities of nerve root as well as intensity and duration of the disease (4). F wave study, part of EDX, has had a controversial sensitivity in diagnosing radiculopathies in different studies (5)(6)(7)(8)(9)(10). For instance, a study showed that comparing F-wave parameters in two limbs can be beneficial in detecting unilateral S 1 radiculopathy and reduce the false negative results of this assessment (11)(12).…”

Section: Mri and Electrodiagnostic Study (Edx)mentioning

confidence: 99%

Diagnostic Sensitivity of F-wave Parameters in Unilateral S1 Radiculopathy

Memar-Montazerin

Khorvash

Ghasemi

et al. 2016

Caspian.J.Neurol.Sci

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Background: F-wave study, part of electrodiagnostic study, has had a controversial sensitivity in the diagnosis of lumbosacral radiculopathy. Objectives: We aimed to compare F wave parameters obtained from the tibial nerve of both extremities in patients with unilateral S1 radiculopathy. Materials and Methods: The study was done from March to September 2015 in the Electrodiagnostic laboratory of an academic hospital affiliated to Isfahan University of Medical Sciences. 19 consecutive patients with clinically and electromyographically approved diagnosis of unilateral S1 radiculopathy entered the study. F-wave parameters (F minimum latency, F maximum latency, F chronodispersion and F persistence) were recorded from tibial nerve of both extremities. Patients with diabetes, bilateral S1 radiculopathy or any other disease known to affect peripheral nerves were excluded from the study. Results: Of nineteen participants, 11 were men. Their mean±SD of age was 46.6±13.7 years. There were no significant differences between mean of F wave parameters recorded from affected and unaffected sides. Also, it was shown that, there was a positive correlation between these parameters in two extremities. Conclusion:The current study compared various F-wave parameters and the results did not support employing F-wave study as a sensitive method for detecting unilateral S1 radiculopathy.

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The Comparison of Multiple F-wave Variable Studies and Magnetic Resonance Imaging Examinations in the Assessment of Cervical Radiculopathy

Abstract: There was a low correlation between F-wave studies and magnetic resonance imaging examinations. The diagnostic utility of multiple F-wave variables in the prediction of cervical radiculopathy was not supported by this study.

Cited by 11 publications

References 15 publications

Value of physical tests in diagnosing cervical radiculopathy: a systematic review

Value of physical tests in diagnosing cervical radiculopathy: a systematic review

Motor Evoked Potentials after Supraspinal Stimulation in Pre- and Postoperative Evaluations of Patients with Cervical Radiculopathy

Diagnostic Sensitivity of F-wave Parameters in Unilateral S1 Radiculopathy

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