2014-06-01 12:00 - Messages

Further work for the development of an inspection tool for risk assessment of pushing and pulling force exertion

This work was commissioned to examine more closely the nature of the forces exerted during manual pushing and pulling operations and to provide a pushing and pulling risk assessment tool that aids identification of key workplace risk factors and measures for control of the risks that they present. It builds on the work reported in RR562 (HSE 2007).
Magnitude of exerted force is one of several factors that may precipitate injury to the musculoskeletal system during pushing and pulling operations, but the force demands in any pushing and pulling operation are not an independent aspect; they are a direct consequence of workplace factors that are present. Practical problems associated with workplace measurement of the task forces are encouraging risk assessment procedures that preclude measurement of the task forces. With input from groups of ergonomists, and potential users (regulatory inspectors and duty holders), it was possible to develop a prototype pushing and pulling operations assessment tool that is user-friendly, reduces/eliminates the need for measurement of force, requires minimal expert knowledge to apply, identifies high-risk operations and intuitively indicates good practice.
Further work in field trialling is now required with the potential users (regulatory inspectors and duty holders) to clarify its usability and effectiveness in real task situations.

Source: http://www.hse.gov.uk/research/rrhtm/rr998.htm

Cinématique et modélisation biomécanique de l’épaule lors de tâches de manutention

De récentes revues de la littérature épidémiologique montrent que travailler avec les bras en position levée augmente la probabilité de développer des troubles musculosquelettiques (TMS) aux épaules. Bien que l’origine et les mécanismes de TMS à l’épaule manquent d’évidence dans la littérature scientifique, réaliser une tâche avec les bras en position levée cause un chargement de la musculature de l’épaule plus important. Cependant, peu d’éléments permettent d’expliquer les raisons pour lesquelles cette posture avec les bras élevés est gênante, et comment celle-ci affecte le membre supérieur en mouvement. La modélisation musculosquelettique du corps humain est aujourd’hui un moyen efficace et non invasif pour obtenir des informations sur les efforts internes qui sont appliqués aux muscles, aux tendons et aux os.

Source: http://www.irsst.qc.ca/-publication-irsst-cinematique-modelisation-biomecanique-epaule-r-828.html

Upper limb musculoskeletal disorders in healthcare personnel

The literature on upper limb musculoskeletal disorders (UL-MSD) in different groups of healthcare workers was reviewed: 65 relevant studies were collected. In dentists, the neck was the most frequently affected segment, with prevalences up to 73% and exceeding 50% in 7 out of 12 studies. In dental hygienists and in laboratory technicians, the hand/wrist had the highest prevalence in the majority of the studies. In nurses, the most seriously affected anatomic sites were the neck and shoulders. Physiotherapists had the lowest prevalence of UL-MSD. A high prevalence of upper limb disease, mainly carpal tunnel syndrome, was reported in dentists, dental hygienists, anesthesia nurses and endoscopists. The high prevalence of upper limb disorders/diseases reported in health personnel supports the hypothesis of a significant risk in these workers. However, the possible role of biomechanical overload, as much as that of stress or other personal factors, cannot be currently assessed.
Practitioner Summary: Published studies support the hypothesis of a significant risk of upper limb musculoskeletal disorders in healthcare activities. The neck was the most frequently affected segment in dentists, the hand/wrist in dental hygienists and in laboratory technicians, and the neck and shoulders in nurses. Lower prevalence was reported in physiotherapists. A high prevalence of carpal tunnel syndrome was also observed in various healthcare activities.

Source: Occhionero V, Korpinen L, Gobba F. Ergonomics. 2014 May 20:1-26.
http://dx.doi.org/10.1080/00140139.2014.917205

Statistiques sur les lésions attribuables aux TMS en milieu de travail 2010-2013

Cette publication de la CSST vise à documenter les lésions attribuables aux TMS en milieu de travail sous les aspects administratif, médical et socio-économique, dans un souci de qualité et d'uniformité des informations transmises sur le sujet. Les données qu'elle contient sont tirées des banques informationnelles de la CSST.
En 2011, une nouvelle définition des lésions de type TMS a été adoptée par la CSST, de concert avec l'IRSST et l'Institut national de santé publique du Québec, afin de faciliter la cohérence et l'interprétation des données.
Sur le plan médical, les lésions de type troubles musculo-squelettiques sont des atteintes inflammatoires ou dégénératives aux structures musculo-squelettiques, causées par une sursollicitation articulaire (application d'une force excessive, répétitive ou continue, parfois combinée à une posture contraignante, à l'exposition aux vibrations ou au froid).

Source: http://www.csst.qc.ca/publications/300/Documents/DC300_322web.pdf

Envoyé: 2014-06-20 8:50 par Maryse Gagnon | avec aucun commentaire
Classé sous : ,
Natural History of Upper Extremity Musculoskeletal Symptoms and Resulting Work Limitations Over 3 Years in a Newly Hired Working Population

Objective: To describe the proportions of workers with upper extremity (UE) symptoms and work limitations because of symptoms in a newly hired working population over a 3-year study period and to describe transitions between various outcome states.
Methods: A total of 827 subjects completed repeat self-reported questionnaires including demographics, medical and work history, symptoms, and work status. Outcomes of interest were UE symptoms and work limitations because of symptoms.
Results: Up to 72% of workers reported symptoms at least once during the study, with 12% reporting persistent symptoms and 27% reporting fluctuating symptoms; 31% reported work limitations at least once, with 3% reporting consistent work limitations and 8% reporting fluctuating limitations.
Conclusions: UE symptoms and work limitations are common among workers and dynamic in their course. A better understanding of the natural course of symptoms is necessary for targeted interventions.

Source: Gardner, Bethany T.; Dale, Ann Marie; Descatha, Alexis; Evanoff, Bradley. Journal of Occupational & Environmental Medicine: June 2014 - Volume 56 - Issue 6 - p 588–594
http://dx.doi.org/10.1097/JOM.0000000000000179

Tracking Low Back Problems in a Major Self-Insured Workforce

Toward Improvement in the Patient's Journey
Objective: To assess the cost outcomes of treatment approaches to care for back problems in a major self-insured workforce, using published guidelines to focus on low back pain.
Methods: Longitudinally tracked episodes of three types of International Classification of Diseases, Ninth Revision diagnosis code–identified back problems (n = 14,787) during 2001 to 2009. Identified five patterns of care on the basis of the first 6 weeks of claims and compared their total costs per episode with tests that included splits by episode type and duration, use of guidelines, and propensity-derived adjustments.
Results: Care congruent with 10 of 11 guidelines was linked to lower total costs. Of the five patterns, complex medical management and chiropractic reported the highest and lowest rates, respectively, of guideline-incongruent use of imaging, surgeries, and medications, and the highest and lowest total costs.
Conclusions: Approaches marked by higher resource utilization and lower guideline congruence are linked to greater low back pain total costs. Total cost is a needed input for guideline development.

Source: Allen, Harris; Wright, Marcia; Craig, Terri; Mardekian, Jack; Cheung, Raymond; Sanchez, Robert; Bunn, William B.; Rogers, William. Journal of Occupational & Environmental Medicine: June 2014 - Volume 56 - Issue 6 - p 604–620.
http://dx.doi.org/10.1097/JOM.0000000000000210

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