Proportion and Number of Upper-Extremity Musculoskeletal Disorders Attributable to the Combined Effect of Biomechanical and Psychosocial Risk Factors in a Working Population

The objective of this paper is to assess the combined effect occupational biomechanical and psychosocial risk factors on incidence work-related upper-extremity musculoskeletal disorders (UEMSDs) estimate proportion number incident cases attributable these in a working population. Using data from French COSALI (COhorte des SAlariés LIgériens) cohort (enrolment phase: 2002–2005; follow-up 2007–2010), complete case analysis including 1246 workers (59% men, mean age: 38 years ± 8.6 at baseline) was performed. All participants underwent standardized clinical examination enrolment 1611 were re-examined follow-up. Population fractions UEMSD calculated. During follow-up, 139 diagnosed, representing an estimated 129,320 projected After adjusting for personal factors, model 1, 8664 (6.7%) low social support, 19,010 (14.7%) high physical exertion, 20,443 (15.8%) co-exposure both factors. In 2, 16,294 (12.6%) 6983 (5.4%) posture with arms above shoulder level, 5043 (3.9%) Our findings suggest that many could be potentially prevented by multidimensional interventions aimed reducing exposure exertion improving support work.