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KMID : 0352819950100020053
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Kosin Medical Journal
1995 Volume.10 No. 2 p.53 ~ p.60
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F Wave in the Median and Tibial Nerves in Healthy Adults
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Abstract
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F-waves are late responses occurring after the M-response on supramaximal stimulation of motor fibers. The F-wave is useful in evaluating proximal motor nerve conduction and in assessing the integrity of the ventral root. It also provides a
measure
of
motor neuron excitability.
This study was undertaken to get normal data of F wave in the median and tibial nerves. Observations were made on 40 healthy adult subjects (20 men and 20 women) ranging in age from 24 to 69 years and in height from 147 to 186 cm. F-waves were
recorded
from the abductor pollicis brevis and the abductor hallucis by stimulations at various sites along the median and tibial nerves, respectively. Twenty consecutive traces were carried out, and F-wave latency (FWL), F-wave conduction velocity
(FWCV),
F
ratio, and F-response freguency were determined. FWL in the median nerve was influenced by age, height and arm length, and FWL in the tibial nerve influenced by age and height. FWCV in the median
nerve was influenced by arm length, and FWCV in the tibial nerve influenced by age. F-response frequency in the median and tibial nerves were not influenced by age, sex, height, and limb length.
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KEYWORD
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