The Relationship Between Work History, Work Environment and Low-Back Pain in Men

Dk, Damkot; Mh, Pope; Lord, Joanne; Jw, Frymoyer

doi:10.1097/00007632-198405000-00012

Cited by 231 publications

(88 citation statements)

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“…8 Previous research has shown that the prevalence and location of musculoskeletal problems are influenced by posture and work habits, work station design, rest period during work as well as demographic factors. 2,[15][16][17] This study confirms the association between musculoskeletal problems among dental practitioners and working position as well as work load, where significantly different rates of musculoskeletal pain were reported when compared by preferred working position and work pattern. In the current study, full timers as well as dentists who usually work in sitting position were more likely to experience musculoskeletal pain than part timers and those who keep alternating between sitting and standing positions.…”

Section: Discussionsupporting

confidence: 72%

Self-reported Occupational Health Problems among Libyan Dentists

Arheiam¹,

Ingafou²

2015

The Journal of Contemporary Dental Practice

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Objectives: To investigate the prevalence of the most common occupation-related health problems as well as factors associated with their incidence among dental practitioners. Materials and methods:A cross-sectional, questionnairebased survey of Libyan dental practitioners. Participants provided information regarding their experience of occupationally related problems they encountered over the past 12 months which included inquiries about musculoskeletal pain, percutaneous injuries, allergy, eye and sight problems, and hearing problems.Results: Musculoskeletal problems were the most frequently reported (48.2%), followed by percutaneous injuries (35%), eye problems (22%), allergy (11%) and hearing problems (7.6%). Musculoskeletal problems were significantly higher among dentists who work in private sector, full timer as well as those who prefer to work in a sitting position (p = 0.021, 0.027 and 0.008, respectively). Practitioners with less than 5 years in service reported significantly higher percentage of percutaneous injuries (p = 0.027) than their senior counterparts, whereas practitioners who spent more than 10 years in service were more likely to suffer from visual disturbances (p = 0.033). Conclusion:The findings of this study indicate that musculoskeletal problems and percutaneous injuries are the most commonly reported occupational health problems among dentists, whereas allergic reactions and hearing problems are the least reported ones.Clinical significance: Dentists should use alternate working positions to minimise musculoskeletal problems and adopt more effective strategies to prevent percutaneous injuries particularly among novices.

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Section: Discussionsupporting

confidence: 72%

Self-reported Occupational Health Problems among Libyan Dentists

Arheiam¹,

Ingafou²

2015

The Journal of Contemporary Dental Practice

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“…Compression force limits have been recommended for safer manual material handling (MMH) maneuvers based on the premise that excessive compression loads could cause injury. Despite the well-recognized role of lifting in low back injuries [4,12,17,33,53], the literature on safer lifting techniques remains controversial [25,48]. In search of optimal lifting methods, squat lift (i.e., knee bent and back straight) is generally considered to be safer than the stoop lift (i.e., knee straight and back bent) in bringing the load closer to the body and, hence, reducing the extra demand on back muscles while counterbalancing the moments of external loads.…”

Section: Introductionmentioning

confidence: 99%

Analysis of squat and stoop dynamic liftings: muscle forces and internal spinal loads

2006

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Despite the well-recognized role of lifting in back injuries, the relative biomechanical merits of squat versus stoop lifting remain controversial. In vivo kinematics measurements and model studies are combined to estimate trunk muscle forces and internal spinal loads under dynamic squat and stoop lifts with and without load in hands. Measurements were performed on healthy subjects to collect segmental rotations during lifts needed as input data in subsequent model studies. The model accounted for nonlinear properties of the ligamentous spine, wrapping of thoracic extensor muscles to take curved paths in flexion and trunk dynamic characteristics (inertia and damping) while subject to measured kinematics and gravity/ external loads. A dynamic kinematics-driven approach was employed accounting for the spinal synergy by simultaneous consideration of passive structures and muscle forces under given posture and loads. Results satisfied kinematics and dynamic equilibrium conditions at all levels and directions. Net moments, muscle forces at different levels, passive (muscle or ligamentous) forces and internal compression/shear forces were larger in stoop lifts than in squat ones. These were due to significantly larger thorax, lumbar and pelvis rotations in stoop lifts. For the relatively slow lifting tasks performed in this study with the lowering and lifting phases each lasting~2 s, the effect of inertia and damping was not, in general, important. Moreover, posterior shift in the position of the external load in stoop lift reaching the same lever arm with respect to the S1 as that in squat lift did not influence the conclusion of this study on the merits of squat lifts over stoop ones. Results, for the tasks considered, advocate squat lifting over stoop lifting as the technique of choice in reducing net moments, muscle forces and internal spinal loads (i.e., moment, compression and shear force).

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“…Em nossa pesquisa, medimos superfície, uma grandeza de área, portanto, fornecedora de uma noção de espaço mais real. Está também estabelecido que a área do canal ósseo, muito mais que o diâmetro sagital, é o parâmetro mais sensível para avaliar se um canal é estreito ou não 42 . Mas esses fatores mecâni-cos, reiteradamente aludidos, não estariam associados a outros?…”

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“…1) Qual a razão dessa ascendente prevalência, constatada por diversos estudos epidemiológi-cos 2,4,8,15,18,[39][40][41][42][43][44][45][46] ? 2) Os estudos acima mencionados, ao apontarem uma prevalência de lombalgias e lombociatalgias da ordem de 55% a 65%, em diferentes grupos populacionais 3,4 , levam à indagação: então, por que os restantes 45% e 35% não apresentam sintomas, se as suas colunas lombares foram submetidas a um semelhante estresse físico e estando em semelhantes condições de trabalho?…”

Section: Introductionunclassified

Proposição de uma reserva anatomofuncional, no canal raquidiano, como fator interferente na fisiopatologia das lombalgias e lombociatalgias mecânico-degenerativas

Cecin¹

1997

Rev. Assoc. Med. Bras.

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The Relationship Between Work History, Work Environment and Low-Back Pain in Men

Cited by 231 publications

References 0 publications

Self-reported Occupational Health Problems among Libyan Dentists

Self-reported Occupational Health Problems among Libyan Dentists

Analysis of squat and stoop dynamic liftings: muscle forces and internal spinal loads

Proposição de uma reserva anatomofuncional, no canal raquidiano, como fator interferente na fisiopatologia das lombalgias e lombociatalgias mecânico-degenerativas

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