ABSTRACT
BACKGROUND AND PURPOSE: The purpose of this study was to compare the effects of two commonly used stimulating electrode placements on F-wave latency. SUBJECTS: Fifty healthy subjects aged 20 to 47 years were tested. METHODS: F-waves were obtained from median and ulnar nerves bilaterally. A total of 200 nerves were tested. RESULTS: A paired t-test indicated a statistically significant difference in F-wave latency between the two stimulating electrode placements. Stepwise linear regression equations demonstrated that our results were consistent with previously published studies. CONCLUSION AND DISCUSSION: Although a statistically significant difference exists between the two techniques, the magnitude of the difference is not likely to be clinically important. Therefore, the most important factor may be to use a consistent technique when investigating potential neuropathies.
