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The prevalence of vibration induced white finger (VWF) was studied in forestry workers currently exposed to hand transmitted vibrations from antivibration (AV) chain saws. The diagnosis of VWF was made in 13.4% of the forestry workers who handled only AV chain saws and in 51.7% of those who had also operated non-AV chain saws in the past. The risk for VWF showed positive increments with each increment of vibration dose. The responsiveness to cold in the digital arteries was also increased with increasing vibration dose and severity of VWF. The authors conclude that the estimated dose response relation showed that if the magnitude of vibration acceleration was doubled, the total duration of exposure should be halved to produce an equivalent effect.
Occupational and Environmental Medicine, 52(11):722-730, 1995. (50 references)
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