Several attempts have been performed to assay the presented tools in situations to which they are uncovered ( 4). Most of the ergonomic quantitative risk assessment tools which have been proposed are only strictly applicable in very limited situations. Several ergonomic risk assessment tools have been developed for this intent ( 3).
Therefore, ergonomic risk factor assessment can help to prevent, minimize or eliminate WMSDs. On the other hand, high occurrence of repetitive strain injuries in some tasks and jobs requires the need to identify the risk factors of these disorders at workplaces ( 3). On the one hand, the estimated prevalence of WMSDs vary depending on assessment tools and exposed population characteristics ( 2). Work-related musculoskeletal disorders (WMSDs) seem to be a main cause of disabilities and workers compensations ( 1). Risk Factors ManTRA Musculoskeletal System 1. ManTRA is also a useful and an applicable tool to assess manual tasks risk in electric factories. The results of NMQ and ManTRA were completely conforming.
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