Biomechanical response of a lumbar intervertebral disc to manual lifting activities: a poroelastic finite element model study

Spine
R N NatarajanGunnar B J Andersson

Abstract

Determination of damage to a lumbar disc caused by lifting using a poroelastic finite element model study. Compare the biomechanical response of a lumbar disc under 8 different lifting conditions and identify the loading conditions that produce the greatest deformations and highest stresses in various tissue components of the disc. Lifting has been associated epidemiologically with back injuries and back pain complaints. Forces high enough to cause mechanical damage to the disc have been predicted using analytical methods. Using kinematic data from series of lifts obtained in our laboratories and an electromyography (EMG)-driven muscle optimization model, representative force patterns for each of 8 lifts were obtained and used as input into a poroelastic finite element model. Disc tissue displacements and stresses were determined for all the 8 lift conditions. RESULTS.: Lifting the box from a maximally lateral flexed posture up to waist level (Task 5) produced the largest translational and rotational motions of all studied. This lift activity also produced maximum von Mises stresses in all disc components: annulus, nucleus, and endplates. The largest facet joint forces were also observed during lift Task 5. Asymmetric lifting i...Continue Reading

References

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Jun 17, 2006·Spine·Mathias HaefeliGünther Paesold

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Citations

Aug 9, 2012·Biomechanics and Modeling in Mechanobiology·N KarajanS Schmitt
Feb 21, 2014·Biomechanics and Modeling in Mechanobiology·N KarajanW Ehlers
Jun 3, 2015·Computer Methods in Biomechanics and Biomedical Engineering·Marco SentelerJess G Snedeker
Feb 22, 2011·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Grace D O'ConnellDawn M Elliott
Sep 30, 2014·Journal of Occupational and Environmental Hygiene·Jay P MehtaCarolyn M Sommerich
Jun 22, 2016·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Narjes Momeni ShahrakiVijay K Goel
Mar 16, 2021·International Journal of Occupational Safety and Ergonomics : JOSE·Rashid Heidari MoghaddamMohammad Hamed Hosseini

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