The effect of postures on musculoskeletal disorders in work places

Zohre  rowshani; Seyed Bagher Mortazavi; Ali Khavanin; Majid Motamedzade; Ebrahim Hajizade; Mahnaz Mohseni

Journal of Kermanshah University of Medical Sciences

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The effect of postures on musculoskeletal disorders in work places

Author(s):

Zohre rowshani¹,

Seyed Bagher Mortazavi^2,*,

Ali Khavanin²,

Majid Motamedzade³,

Ebrahim Hajizade⁴,

Mahnaz Mohseni⁵

1Occupational Environment Health Center, Ministry of Health and Medical Education, Tehran, Iran

2Dept. of Occupational & Environmental Health, School of Medical Sciences, Tarbiat Modares University. Tehran, Iran

3Dept. of Agronomy, Hamadan University of Medical Sciences, Hamadan, Iran

4Dept. of Biostatistics, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran

5Senior Safety Expert of NIORDC, HSE Management Department, Tehran, Iran

Journal of Kermanshah University of Medical Sciences:Vol. 16, issue 5; e77351

Published online:Dec 29, 2012

Article type:Research Article

Received:Oct 30, 2011

Accepted:Apr 10, 2012

How to Cite:Zohre rowshani, Seyed Bagher Mortazavi, Ali Khavanin, Majid Motamedzade, Ebrahim Hajizade, et al. The effect of postures on musculoskeletal disorders in work places.J Kermanshah Univ Med Sci.2012;16(5):e77351.

Abstract

Background: Nowadays, Musculoskeletal Disorders (MSDs) are the most common problems in the workplaces. Non-ergonomic workstation and job design lead the workers to expose to various kinds of risk factors that cause MSDs. In this study, Rapid Upper Limb Assessment (RULA) and Nordic musculoskeletal questionnaire (NMQ) were used for assessing the risk of cause musculoskeletal disorders (MSDs) at a TV manufacturing company.

Methods: In this cross-sectional study, 50 workers were selected randomly from assembly lines workers. Then RULA method was performed and NMQ was completed for workers too. Jobs were categorized into two parts of safe and unsafe jobs and musculoskeletal disorders risk factors were assessed.

Results: According to RULA scoring method, for right hand, 46% of cases were at grade 2, 52% of cases were at grade 3 and only 2% of cases were at grade 4.

Regarding left hand 44% of cases were at grade 2, 54% of cases were at grade 3 and 2% of cases were at grade 2. Also, no job was at grade 1and only in APT 25% of cases were in grade 4 for both hands. Results from NMQ have also showed that most prevalent disorders were among waist & shoulder (48%), neck (28%) and back (24%) respectively.

Conclusion: This study showed that the mentioned variables had no relation with musculoskeletal disorders. This, perhaps, is the result of lower age and their low experience of the workers as well as the interference of some extraneous variables.

Keywords

musculoskeletal disorders (MSDs)

ergonomics

RULA method

Nordic musculoskeletal questionnaire (NMQ)

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