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Validation of an OpenSim full-body model with detailed lumbar spine for estimating lower lumbar spine loads during symmetric and asymmetric lifting tasks |
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| Authors: | Erica Beaucage-Gauvreau William S P Robertson Scott C E Brandon Robert Fraser Brian J C Freeman Ryan B Graham |
| Institution: | 1. School of Mechanical Engineering, The University of Adelaide, Adelaide, South Australia, Australia;2. Spinal Research Group, Centre for Orthopaedic &3. Trauma Research, Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia;4. School of Engineering, The University of Guelph, Guelph, Ontario, Canada;5. Affiliate Professor, The University of Adelaide, Adelaide, South Australia, Australia;6. Spinal Surgery, Royal Adelaide Hospital, Adelaide, South Australia, Australia;7. Spinal Services, Royal Adelaide Hospital, Adelaide, South Australia, Australia;8. Adelaide Medical School, The University of Adelaide, Adelaide, South Australia, Australia;9. Research Fellow, South Australian Health and Medical Research Institute, Spinal Unit Administration, Royal Adelaide Hospital, Adelaide, South Australia, Australia;10. School of Human Kinetics, The University of Ottawa, Ottawa, Ontario, Canada |
| Abstract: | There is currently no validated full-body lifting model publicly available on the OpenSim modelling platform to estimate spinal loads during lifting. In this study, the existing full-body-lumbar-spine model was adapted and validated for lifting motions to produce the lifting full-body model. Back muscle activations predicted by the model closely matched the measured erector spinae activation patterns. Model estimates of intradiscal pressures and in vivo measurements were strongly correlated. The same spine loading trends were observed for model estimates and reported vertebral body implant measurements. These results demonstrate the suitability of this model to evaluate changes in lumbar loading during lifting. |
| Keywords: | Full-Body Model spine biomechanics modeling and simulations lifting trunk spine loading |