Biomechanical Risk Factors of the Upper Limbs' Musculoskeletal Disorders among Carpet Weavers in Tunisia: Semi-Quantitative Ergonomic Assessment.

IF 0.8 Q4 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH Indian Journal of Occupational and Environmental Medicine Pub Date : 2023-04-01 Epub Date: 2023-07-03 DOI:10.4103/ijoem.ijoem_109_22
Lamia Bouzgarrou, Asma Kheder, Latifa Ben Afia, Amira Ormrane, Faten Hermassi
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Abstract

Background: Musculoskeletal disorders are one of the most common occupational health problems and one of the leading causes of temporary disability. This study aimed to assess the biomechanical constraints of upper limb musculoskeletal disorders associated with Tunisian weavers' tasks.

Methodology: An ergonomic approach was adopted with a representative sample of Tunisian weavers. First, the activity was observed mainly for identifying tasks and sub-tasks. Then, the biomechanical constraints were assessed based on the Borg scale and the software analyses and encoding of the 2,000 images extracted from the activity video recordings. These analyses were done with the ERGOROM software.

Results: Four main tasks were identified (warping of the loom, weaving itself, beating up, and finishing). As for the subtasks, the six most important were thread coiling, shedding and picking, beating up the weft, knotting, cutting, and shearing. Semi-quantitative analysis revealed that weavers spent most of their working time in the constrained neck and upper limb postures. Shoulders were in flexion/abduction during 68.6% of the activity and pinch grip was spread over 83.3% of the working time. Furthermore, elbows and wrists were highly concerned by elevated gestural variability scores. The estimated deployed strength was "medium" to "strong" in 50% to nearly 80% of cases.

Conclusion: According to the results, in carpet weavers, exposure to biomechanical constraints at risk of musculoskeletal disorders was high for the various joints and parts of the upper limbs. It is, therefore, necessary to carry out interventional studies for the development of ergonomic hand tools and workstations adapted to the traditional weaver activity.

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突尼斯地毯编织者上肢肌肉骨骼疾病的生物力学危险因素:半定量工效学评估。
背景:肌肉骨骼障碍是最常见的职业健康问题之一,也是导致暂时残疾的主要原因之一。本研究旨在评估与突尼斯编织工任务相关的上肢肌肉骨骼疾病的生物力学约束。方法:采用符合人体工程学的方法,以突尼斯织布工为代表。首先,观察活动主要是为了识别任务和子任务。然后,基于Borg量表和从活动视频记录中提取的2000张图像的软件分析和编码来评估生物力学约束。这些分析是用ERGOROM软件完成的。结果:确定了四项主要任务(织机整经、织造、打纬和精整)。关于子任务,最重要的六项任务是绕线、脱纬、打纬、打结、切割和剪切。半定量分析显示,编织者的大部分工作时间都处于受约束的颈部和上肢姿势。在68.6%的活动中,肩膀处于屈曲/外展状态,在83.3%的工作时间中,夹持处于伸展状态。此外,肘部和手腕高度关注手势变异性评分的升高。估计部署兵力在50%至近80%的情况下为“中等”至“较强”。结论:根据研究结果,在地毯编织者中,暴露于生物力学约束下的上肢各关节和部位患肌肉骨骼疾病的风险较高。因此,有必要进行干预研究,开发符合人体工程学的手工工具和工作站,以适应传统的编织活动。
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来源期刊
Indian Journal of Occupational and Environmental Medicine
Indian Journal of Occupational and Environmental Medicine PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH-
CiteScore
1.60
自引率
0.00%
发文量
25
期刊介绍: The website of Indian Journal of Occupational and Environmental Medicine aims to make the printed version of the journal available to the scientific community on the web. The site is purely for educational purpose of the medical community. The site does not cater to the needs of individual patients and is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her existing physician.
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