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Open Access 01-12-2019 | Carpal Tunnel Syndrome | Research article

Work-related neck and upper limb disorders – quantitative exposure–response relationships adjusted for personal characteristics and psychosocial conditions

Authors: Istvan Balogh, Inger Arvidsson, Jonas Björk, Gert-Åke Hansson, Kerstina Ohlsson, Staffan Skerfving, Catarina Nordander

Published in: BMC Musculoskeletal Disorders | Issue 1/2019

Abstract

Background

We have previously reported quantitative exposure-response relationships between physical exposures recorded by technical methods, and complaints and diagnoses in the neck/shoulders, and the elbows/hands, based on group data. In the present study the number of workers was doubled, and information on individual factors, and psychosocial working conditions was used. Relationships between various kinds of exposure and response have been analysed in this larger and more detailed sample.

Methods

The prevalence of complaints (Nordic Questionnaire) and diagnoses (clinical examination) were recorded in a number of occupational groups within which the participants had similar work tasks, 34 groups of female employees (N = 4733 women) and 17 groups of male employees (N = 1107 men). Age and other individual characteristics were recorded, as well as psychosocial work environment factors (job-content questionnaire) for most participants. Postures and velocities (inclinometry) of the head (N = 505) and right upper arm (N = 510), right wrist postures and velocities (electrogoniometry; N = 685), and muscular activity (electromyography; EMG) in the right trapezius muscle (N = 647) and forearm extensors (N = 396) were recorded in representative sub-groups. Exposure-response relationships between physical exposure and musculoskeletal disorders, adjusted for individual factors with Poisson regression were then calculated. The effect of introducing psychosocial conditions into the models was also assessed.

Results

Associations were found between head velocity, trapezius activity, upper arm velocity, forearm extensor activity and wrist posture and velocity, and most neck/shoulder and elbow/hand complaints and diagnoses. Adjustment for age, other individual characteristics and psychosocial work conditions had only a limited effect on these associations. For example, the attributable fraction for tension neck syndrome among female workers with the highest quintile of trapezius activity was 58%, for carpal tunnel syndrome versus wrist velocity it was 92% in men in the highest exposure quintile.

Conclusions

Based on the findings, we propose threshold limit values for upper arm and wrist velocity.

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Title: Work-related neck and upper limb disorders – quantitative exposure–response relationships adjusted for personal characteristics and psychosocial conditions
Authors: Istvan Balogh
Inger Arvidsson
Jonas Björk
Gert-Åke Hansson
Kerstina Ohlsson
Staffan Skerfving
Catarina Nordander
Publication date: 01-12-2019
Publisher: BioMed Central
Keywords: Carpal Tunnel Syndrome
Carpal Tunnel Syndrome
Published in: BMC Musculoskeletal Disorders / Issue 1/2019
Electronic ISSN: 1471-2474
DOI: https://doi.org/10.1186/s12891-019-2491-6

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Work-related neck and upper limb disorders – quantitative exposure–response relationships adjusted for personal characteristics and psychosocial conditions

Abstract

Background

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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