Prevalence of upper extremity musculoskeletal symptoms and ergonomic risk factors at a Hi-Tech company in Israel

Abstract

This cross-sectional study examines the relationship between ergonomic risk factors and upper extremity musculoskeletal symptoms (UEMSS) in VDT workers at a Hi-Tech company, while taking into account individual and work organizational factors, and stress. The study population of 84 workers (92% response rate) is comprised of computer programmers, managers, administrators, and marketing specialists. Data on UEMSS, individual and organizational factors, and stress were derived from a questionnaire, while ergonomic data were collected through two direct observations via the rapid upper limb assessment (RULA) method. Results of the RULA observations indicate excessive postural loading with no employee in acceptable postures (all scores ⩾3). Hand/wrist/finger symptoms were related to the RULA arm/wrist score (in a logistic regression model) as well as working with a VDT between 7.1 and 9 h a day, and working in Hi-Tech companies for more than 2 years. Neck/shoulder symptoms were related to: gender (female), working >10 h a day, working at the Hi-Tech company for more than 2 years, and being uncomfortable at the workstation. The results underline the need for implementing an intervention program focusing on arm/wrist posture, and for taking into account the special needs of subgroups: gender, working 10 h a day, working 7.1–9 h a day with a VDT, and employees experiencing discomfort at workstations. Relevance to industry Upper extremity musculoskeletal disorders and ergonomic research have not focused enough on the Hi-Tech industry. Even with the .com crash, this industry remains a major force in the world economy. VDT work in the Hi-Tech industry has unique risk factors, which might lead to specific needs for intervention.