Reassessing Hand-Arm Vibration and Musculoskeletal Disorders in Jackhammer Users: A Case Study

Reassessing Hand-Arm Vibration and Musculoskeletal Disorders in Jackhammer Users: A Case Study

Code: G-1278

Authors: Meisam Mataji Amirroud © ℗, Sara Aliyari Babolghani

Schedule: Not Scheduled!

Tag:

Download: Download Poster

Abstract:

Introduction

This case study delved into assessing hand-arm vibration (HAV) and musculoskeletal disorders (MSDs) among a group of jackhammer users. The study aimed to evaluate HAV levels based on ISO5349 standards, analyze reported MSDs, and investigate potential associations with ergonomic factors and environmental conditions in Iran.

Methods and Materials / Case Report

Fifteen participants, jackhammer users, were evaluated for HAV exposure. Four different postures were assessed using the Rapid Upper Limb Assessment (RULA) method. Additionally, a short interview was conducted to gather insights into users' ergonomic training, environmental conditions, and perceptions of vibration-related health issues.

Results

The study revealed that the measured hand-arm vibration levels were within the limits defined by the ISO5349 standard. Notably, these levels were surprisingly lower compared to similar studies conducted outside Iran. However, a majority of users reported experiencing MSDs. The ISO5349 standard primarily focuses on white-finger syndrome, exacerbated in colder climates, whereas Iran experiences warmer weather conditions. Users were found to adopt awkward postures during jackhammer operation, potentially exacerbating the problem. Interviews highlighted that none of the users had received ergonomic training. Additionally, the reduction in jackhammer air pressure contributed to lower vibration levels compared to other countries' studies.

Conclusion

The study outcomes strongly advocate for revisiting hand-arm vibration guidelines to encompass disorders beyond white-finger syndrome and to include other potential limb-related issues. Moreover, there is a critical need to document and consider the postures adopted during vibration measurements. The study emphasizes the significance of ergonomic training for jackhammer users to mitigate the risk of musculoskeletal disorders and calls for a reevaluation of HAV standards in warmer climates with attention to broader MSDs.

Key Words

Hand-arm vibration, musculoskeletal disorders, ISO5349 standard, ergonomic training, jackhammer users, Rapid Upper Limb Assessment (RULA), posture assessment, environmental conditions

Post comment is closed by admin.