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Snap-fits and upper limb functional limitations in German automotive workers
J Ohlander1, M-C Keskin2, S Weiler2
1Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital Munich, 80336 Munich, Germany, johan.ohlander@med.uni-muenchen.de.
Occupational Medicine (Oxford, England)
|April 10, 2016
Summary
Long-term exposure to snap-fit assembly in automotive workers is linked to upper limb functional limitations. Extended use, over 25 months, significantly increases the risk of these issues.
Area of Science:
- Occupational health
- Ergonomics
- Musculoskeletal disorders
Background:
- Snap-fit fasteners are increasingly used in automotive assembly.
- The impact of snap-fit assembly on upper limb function in assembly workers is not well understood.
Purpose of the Study:
- To investigate the association between snap-fit assembly and upper limb functional limitations (ULFLs).
- To assess the impact of a large-scale expansion of snap-fit assembly use in a German automotive company.
Main Methods:
- Cross-sectional study of 10722 blue-collar production workers.
- Data collected via medical check-ups and company registers.
- Logistic regression analysis adjusted for BMI, gender, and prior employment duration.
Main Results:
- Workers exposed to snap-fit assembly for ≥25 months had a >2-fold increased risk of ULFLs (OR = 2.44, 95% CI 1.52-3.92).
- Exposure durations of 1-12 months and 13-24 months were not significantly associated with ULFLs.
- No clear dose-response relationship was identified.
Conclusions:
- Prolonged snap-fit assembly use negatively impacts workers' upper limb function.
- Company physicians should monitor workers exposed to snap-fit assembly for musculoskeletal disorders.
