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      Mejoría clínica de tendinopatía de hombro tras modificaciones ergonómicas del puesto de trabajo de usuarios de ordenador Translated title: Clinical improvement of shoulder tendinopathy after ergonomic modifications of the workstation of computer users

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          Abstract

          Resumen Introducción: A pesar de la baja evidencia de la relación entre la patología del hombro y el uso de ordenadores, algunos autores asocian dicha patología con el uso del ratón informático, su posición alejada del cuerpo o el espacio insuficiente en la mesa de trabajo. Caso clínico: Presentamos el caso de cuatro trabajadores que, en el transcurso del último año, se han dirigido espontáneamente al servicio médico manifestando dolor en el hombro que relacionaban con sus condiciones de trabajo y como se ha solucionado dicha clínica mediante la adaptación del puesto de trabajo, básicamente gracias a la introducción de un ratón inalámbrico que ha permitido el rediseño del puesto de trabajo. Discusión: La imposibilidad de mover el ratón libremente debido a restricciones en el espacio de la mesa de trabajo y a la utilización de ratón más de 4 horas/día durante la jornada laboral se ha descrito como causa de patología a nivel de hombros. En otros casos también se asoció con un espacio insuficiente en la mesa de trabajo, tener el ratón alejado de la posición corporal o utilizarlo durante la mitad o más tiempo de la jornada laboral. Desde un punto de vista biomecánico el manguito de los rotadores es exigente para evitar fuerzas luxantes, lo que realiza mediante contracción excéntrica o fuerzas neutralizadoras de grupos antagonistas. El supraespinoso tiene un papel importante al inicio de la abducción con un ángulo de tracción máximo aproximadamente a 75°. Determinadas posiciones podrían influenciar su fatiga y/o proceso inflamatorio. Conclusiones: Nuestra experiencia nos indica que una sencilla y asumible modificación de la posición del hombro durante la utilización del ratón ha sido útil para revertir cuadros clínicamente compatibles con tendinopatías a este nivel.

          Translated abstract

          Abstract Introduction: Despite the low evidence of the relationship between shoulder pathology and the use of computers, some authors associate this pathology with the use of the computer mouse, its position away from the body or insufficient space on the desk. Clinical case: We present the case of four workers who, during the last year, consulted medical services spontaneously, manifesting shoulder pain related to their working conditions and how this clinic has been solved by adapting the workplace, basically thanks to the introduction of a wireless mouse that allowed the redesign of the workplace. Discussion: The inability to move the mouse freely due to restrictions in the space of the work table and the use of mice more than 4 hours / day during the workday has been described as a cause of shoulder pathology. In other cases, it was also associated with insufficient space on the work table, having the mouse away from body position or using it during half or more of the workday. From a biomechanical point of view the rotator cuff is demanding to avoid dislocating forces, which it does by means of eccentric contraction or neutralizing forces of antagonist groups. The supraspinatus plays an important role at the beginning of abduction with a maximum traction angle of approximately 75°. Certain positions may influence your fatigue and / or inflammatory process. Conclusions: Our experience indicates that a simple and acceptable modification of the position of the shoulder during the use of the mouse has been useful to improve events of clinical presentations like tendinopathies at this level.

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          Most cited references6

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          Computer work and musculoskeletal disorders of the neck and upper extremity: A systematic review

          Background This review examines the evidence for an association between computer work and neck and upper extremity disorders (except carpal tunnel syndrome). Methods A systematic critical review of studies of computer work and musculoskeletal disorders verified by a physical examination was performed. Results A total of 22 studies (26 articles) fulfilled the inclusion criteria. Results show limited evidence for a causal relationship between computer work per se, computer mouse and keyboard time related to a diagnosis of wrist tendonitis, and for an association between computer mouse time and forearm disorders. Limited evidence was also found for a causal relationship between computer work per se and computer mouse time related to tension neck syndrome, but the evidence for keyboard time was insufficient. Insufficient evidence was found for an association between other musculoskeletal diagnoses of the neck and upper extremities, including shoulder tendonitis and epicondylitis, and any aspect of computer work. Conclusions There is limited epidemiological evidence for an association between aspects of computer work and some of the clinical diagnoses studied. None of the evidence was considered as moderate or strong and there is a need for more and better documentation.
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            The relative contribution of work exposure, leisure time exposure, and individual characteristics in the onset of arm-wrist-hand and neck-shoulder symptoms among office workers.

            To identify the risk factors for the onset of arm-wrist-hand and neck-shoulder symptoms among office workers and to estimate the relative contribution of these risk factors by calculating Population Attributable Fractions (PAFs). A prospective cohort study was conducted among 1951 office workers with a follow-up duration of 2 years. Data on self-reported risk factors were collected at baseline and after 1 year of follow-up. Every 3 months, the occurrence of upper extremity symptoms was assessed using questionnaires. PAFs for individual risk factors were estimated based on Rate ratios (RRs) obtained from Poisson regression using Generalized Estimation Equations. Previous disabling symptoms were identified as the most important risk factor for the onset of arm-wrist-hand and neck-shoulder symptoms. Modifiable risk factors for arm-wrist-hand symptoms with relatively large PAFs were: at least 4 h per day of self-reported computer use at work, high level of overcommitment, and low task variation and for neck-shoulder symptoms: supporting the arms during keyboard use and at least 4 h per day of self-reported mouse use at work. Compared to having 0 or 1 risk factor, the RR for arm-wrist-hand symptoms increased to 6.2 (95% CI 3.7-10.5) for having 5-7 potentially modifiable risk factors and for neck-shoulder symptoms to 3.0 (95% CI 2.1-4.4) for having 4 or 5 potentially modifiable risk factors. Preventive interventions at the population level should be aimed at changing modifiable risk factors with large PAFs. At the individual level, preventive interventions should be aimed at changing multiple modifiable risk factors simultaneously.
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              Neck and shoulder complaints in computer workers and associated easy to assess occupational factors-a large-scale cross-sectional multivariate study

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                Author and article information

                Journal
                mesetra
                Medicina y Seguridad del Trabajo
                Med. segur. trab.
                Escuela Nacional de Medicina del Trabajo. Instituto de Salud Carlos III (Madrid, Madrid, Spain )
                0465-546X
                1989-7790
                September 2019
                : 65
                : 256
                : 233-237
                Affiliations
                [1] Barcelona orgnameCentro Corporativo España
                Article
                S0465-546X2019000300233 S0465-546X(19)06525600233
                377bd7fb-5965-49b0-b659-a44c156a34eb

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 16 July 2019
                : 25 June 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 6, Pages: 5
                Product

                SciELO Spain

                Categories
                Caso Clínico

                Periféricos de ordenador,Tendinopathy,Interfaz usuario-ordenador,Shoulder,Computer peripherals,User-Computer Interface,Tendinopatía,Hombro

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