On the Health Risk of the Lumbar Spine Due to Whole-Body Vibration—theoretical Approach, Experimental Data and Evaluation of Whole-Body Vibration

Seidel, Helmut; Blüthner, Ralph; Hinz, Barbara; Schust, Marianne

doi:10.1006/jsvi.1998.1601

Cited by 38 publications

(35 citation statements)

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“…The model of prediction of σ dyn has been compared to Seidel et alʼs results [6]. They developed from experiments a model to estimate the mean dynamic and the total stresses at L5/S1 for young people (21 years old) with mean M = 68 kg, S = 1753, 1963, 2024 mm angles: the driving posture D and the bend forward posture BF.…”

Section: Discussionmentioning

confidence: 99%

“…Seidel et al used the same parameter [6]. In fact, Seidel et al considered two main parameters to define the bone structure, S and the humeral index represented by the ratio between elbow width and the length of the upper arm.…”

Section: Protocol Of the Design Of Experimentsmentioning

confidence: 99%

“…In fact, WBV induce dynamic stresses, principally compressive, into the spine, producing microfractures into the endplates and vertebral body. The long-term exposure of the human body to vibrations with the influence of different sitting postures, the effect of osseous density and the individual variability of the morphology, may lead to mechanical fatigue [4,5] and low back pain due to microfractures in bones (cortical and cancellous) on endplates and microlesions in the intervertebral discs [6,7,8,9]. Ayari, Thomas and Doré suggested that fatigue failure of vertebral endplates and cancellous bone could be the pathogenetic mechanism that caused subsequent degenerative changes of the lumbar spine [10].…”

Section: Introductionmentioning

confidence: 99%

“…By applying an analytical method, Thomas, Lakis and Sassi studied the long-term adverse health effect for drivers exposed to harmonic and random vibrations [13]. Seidel, Blüthner, Hinz, et alʼs experimental study made it possible to assess a relationship between the forces and the acceleration at the seat by considering posture and the nature of the body (bone structure) [6]. However, most of these models used fixed parameters and were not designed to easily observe the effect of interindividual variations such as posture, bone structure, body weight, etc.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Design of Experiments for Statistically Predicting Risk of Adverse Health Effects on Drivers Exposed to Vertical Vibrations

Ayari

Thomas

Doré

2011

International Journal of Occupational Safety and Ergonomics

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Section: Discussionmentioning

confidence: 99%

Section: Protocol Of the Design Of Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Design of Experiments for Statistically Predicting Risk of Adverse Health Effects on Drivers Exposed to Vertical Vibrations

Ayari

Thomas

Doré

2011

International Journal of Occupational Safety and Ergonomics

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“…Prolonged exposure to whole-body vibration (WBV) is recognized as a risk factor for spine disorders 1,2) even though underlying mechanisms for such an association remain yet to be identified. Proper injury prevention and treatment programs require a sound knowledge of trunk muscle forces and spinal loads under WBV exposure.…”

Section: Introductionmentioning

confidence: 99%

Biodynamic Response and Spinal Load Estimation of Seated Body in Vibration Using Finite Element Modeling

Wang

Bazrgari²,

Shirazi‐Adl

et al. 2010

Ind Health

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Trunk biomechanical models play an indispensable role in predicting muscle forces and spinal loads under whole-body vibration (WBV) exposures. Earlier measurements on the force-motion biodynamic response (impedance, apparent mass) at the body-seat interface and vibration transmissibility (seat to head) have led to the development of different mechanical models. Such models could simulate the overall passive response and serve as an important tool for vehicle seat design. They cannot, however, evaluate physiological parameters of interest under the WBV. On the contrary, anatomical models simulating human's physiological characteristics can predict activities in muscles and their dynamic effects on the spine. In this study, a kinematics-driven nonlinear finite element model of the spine, in which the kinematics data are prescribed, is used to analyse the trunk response in seated WBV. Predictions of the active model (i.e., with varying muscle forces) as compared with the passive model (i.e., with no muscle forces) compared satisfactorily with measurements on vertical apparent mass and seat-to-head transmissibility biodynamic responses. Results demonstrated the crucial role of muscle forces in the dynamic response of the trunk. Muscle forces, while maintaining trunk equilibrium, substantially increased the compression and shear forces on the spine and, hence, the risk of tissue injury.

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Prediction of the biomechanical behaviour of the lumbar spine under multi‐axis whole‐body vibration using a whole‐body finite element model

Zhang

Guo

2023

Numer Methods Biomed Eng

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Low back pain has been reported to have a high prevalence among occupational drivers. Whole‐body vibration during the driving environment has been found to be a possible factor leading to low back pain. Vibration loads might lead to degeneration and herniation of the intervertebral disc, which would increase incidence of low back problems among drivers. Some previous studies have reported the effects of whole‐body vibration on the human body, but studies on the internal dynamic responses of the lumbar spine under multi‐axis vibration are limited. In this study, the internal biomechanical response of the intervertebral disc was extracted to investigate the biomechanical behaviour of the lumbar spine under a multi‐axial vibration in a whole‐body environment. A whole‐body finite element model, including skin, soft tissues, the bone skeleton, internal organs and a detailed ligamentous lumbar spine, was used to provide a whole‐body condition for analyses. The results showed that both vibrations close to vertical and fore‐and‐aft resonance frequencies would increase the transmission of vibrations in the intervertebral disc, and vertical vibration might have a greater effect on the lumbar spine than fore‐and‐aft vibration. The larger deformation of the posterior region of the intervertebral disc in a multi‐axis vibration environment might contribute to the higher susceptibility of the posterior region of the intervertebral disc to injury. The findings of this study revealed the dynamic behaviours of the lumbar spine in multi‐axis vehicle vibration conditions, and suggested that both vertical and fore‐and‐aft vibration should be considered for protecting the lumbar health of occupational drivers.

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On the Health Risk of the Lumbar Spine Due to Whole-Body Vibration—theoretical Approach, Experimental Data and Evaluation of Whole-Body Vibration

Cited by 38 publications

References 0 publications

A Design of Experiments for Statistically Predicting Risk of Adverse Health Effects on Drivers Exposed to Vertical Vibrations

A Design of Experiments for Statistically Predicting Risk of Adverse Health Effects on Drivers Exposed to Vertical Vibrations

Biodynamic Response and Spinal Load Estimation of Seated Body in Vibration Using Finite Element Modeling

Prediction of the biomechanical behaviour of the lumbar spine under multi‐axis whole‐body vibration using a whole‐body finite element model

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