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Work-related Musculoskeletal Disorders Among Machinery Manufacturing Factory Workers in a Chinese Factory.
Fengtao Cui1,2,3, Yucheng Sun1,2, Yingge Duan1,2
1Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing, China.
Safety and Health at Work
|July 1, 2026
Summary
Work-related musculoskeletal disorders (WMSDs) affect over 80% of machinery manufacturing workers. Poor ergonomic postures, like lateral head bending, significantly increase WMSD risk, highlighting the need for targeted interventions.
Area of Science:
- Occupational Health
- Ergonomics
- Musculoskeletal Disorders
Background:
- High prevalence of work-related musculoskeletal disorders (WMSDs) in the machinery manufacturing sector.
- Lack of effective prevention and control measures for WMSDs in this industry.
Purpose of the Study:
- To investigate the prevalence of WMSDs among workers in a machinery manufacturing factory.
- To explore the risk factors associated with WMSDs, focusing on ergonomic postures.
Main Methods:
- Survey of 226 workers using a modified Nordic Musculoskeletal Questionnaire.
- Application of structural equation modeling and multiplicative interaction models to analyze risk factors.
Main Results:
- WMSD prevalence reached 86.28%, with lower back pain being most common.
- Poor work postures (static, dynamic, combined) negatively correlated with musculoskeletal health.
- Lateral head bending duration/frequency linked to reduced neck and shoulder health (OR < 0.071).
Conclusions:
- Poor ergonomic postures are significantly associated with WMSDs in machinery manufacturing.
- Intervention studies targeting ergonomic improvements are crucial for WMSD prevention.
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