Vibration-induced neuropathy among forestry workers

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Abstract
The neurological findings of 217 forestry workers were evaluted during a compulsory annual health examination. Vibration detection thresholds were determined for the left hand and foot. The handgrip forces were measured for both hands. A reduction in the vibration detection threshold or handgrip force was not associated with clinical neuropathy. Polyneuropathy was found in 4% of the lumberjacks whereas neuropathy restricted to the arms was found in 7.5% of the lumberjacks. The neuropathic findings were not linked with alcohol consumption but were associated with a history of numbness in the hands and diminished muscle force. Local vibration can cause neuropathy in the arms, but the mechanisms of vibration-induced neuropathy still remains uncertain.

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