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Related Experiment Videos

Vibration white finger: a follow up study.

L Ekenvall, A Carlsson

    British Journal of Industrial Medicine
    |July 1, 1987
    PubMed
    Summary

    Vibration white finger (VWF) symptoms may improve years after ceasing vibrating tool use. Continued exposure worsens VWF and increases cold sensitivity, suggesting a long recovery period is needed for symptom relief.

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    Area of Science:

    • Occupational Health
    • Neurology
    • Vascular Medicine

    Background:

    • Vibration white finger (VWF) is a condition caused by exposure to vibrating tools.
    • The long-term course and recovery patterns of VWF are not fully understood.
    • Factors influencing symptom improvement require further investigation.

    Purpose of the Study:

    • To investigate the longitudinal course of vibration white finger (VWF) symptoms.
    • To assess the impact of cessation of vibrating tool use on VWF.
    • To evaluate the role of cold exposure and cold provocation tests in VWF recovery.

    Main Methods:

    • A longitudinal study re-examining 55 men with VWF after 3.5 to 6 years.
    • Patient interviews to assess subjective symptom changes.
    • Finger systolic pressure measurements after general body and local finger cooling (cold provocation test).

    Main Results:

    • Subjective improvement in VWF symptoms was reported by some patients, but only after more than three years of ceasing vibrating tool use.
    • Vibration-exposed outdoor workers who transitioned to indoor work also reported improvement after three years, suggesting diminished cold exposure is not the primary factor.
    • Patients continuing to work with vibrating tools reported increased symptoms, correlating with a heightened reaction in cold provocation tests.

    Conclusions:

    • Recovery from vibration white finger (VWF) is a slow process, often requiring over three years after cessation of exposure.
    • Continued exposure to vibrating tools leads to symptom exacerbation and increased vascular reactivity to cold.
    • Diminished cold exposure alone does not appear to be the main driver of symptom improvement in VWF.

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