Subclinical impairment in the median nerve across the carpal tunnel among female VDT operators.
Sensory nerve conduction velocities in the palm-to-finger (SCV-pf), wrist-to-finger (SCV-wf), wrist-to-palm (SCV-wp), and wrist-to-elbow (SCV-we) segments and the distribution of nerve conduction velocities in the right median nerve were determined among 27 female operators aged 19-37 and 19 healthy women (controls) aged 19-31 to estimate the prevalence of subclinical carpal tunnel syndrome (CTS).
Also, the WF/PF ratio, dividing the SCV-wf by the SCV-pf, was calculated to assess abnormalities of nerve conduction within the carpal tunnel.
The operators were engaged in data entry in front of a visual display terminal (VDT) for about 6 h/day, and their working duration was between 1 and 17 (mean 6) years.
The SCV-wf, SCV-wp, and WF/PF ratio in the operators were significantly lower than those in the controls.
The rate of persons with the WF/PF ratio of less than 90%, i.e., below normal limits in the 19 controls, was significantly higher in the operator group (37%) than in the control group (0%). The operators complained of more symptoms related to CTS than did the controls, but any symptoms were not associated with slowing of nerve conduction velocities in the operators.
In the controls, the WF/PF ratio was not closely correlated with skin temperature or age despite the presence of significant relations between skin temperature and the SCV-wf, SCV-pf, and SCV-wp ; the interpersonal variability of the WF/PF ratio was much smaller than that of all SCVs.
In the ...
Mots-clés Pascal : Canal carpien syndrome, Homme, Femelle, Exposition professionnelle, Conduction nerveuse, Nerf médian, Opérateur, Ordinateur, Saisie donnée, Médecine travail, Compression, Système nerveux pathologie, Nerf périphérique pathologie, Système ostéoarticulaire pathologie, Travail répétitif
Mots-clés Pascal anglais : Carpal tunnel syndrome, Human, Female, Occupational exposure, Nerve conduction, Median nerve, Operator, Computer, Data acquisition, Occupational medicine, Compression, Nervous system diseases, Peripheral nerve disease, Diseases of the osteoarticular system
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0097685
Code Inist : 002B16B. Création : 199608.