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Lumbar spine loading is considered as an indicator of sitting discomfort. The internal loading can be measured using force sensor implants, but this is an invasive method thus limited to a very small number of studies. Alternatively, spinal loading can be estimated non-invasively using a musculoskeletal (MSK) model. However, few studies evaluated a MSK model by comparing estimated and measured spine loading in seated conditions. This study aimed to evaluate a MSK model by comparing the trend of the simulated resultant force at L1 vertebra with in-vivo measurements in ten different seating conditions. Results show a highly correlated (r = 0.98) trend between the model prediction and experimental ground truth, suggesting the MSK model has possibility to be used for seating research.

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An Exploratory Evaluation of a Seated Musculoskeletal Model Through Comparison of Estimated and In-Vivo Measured Lumbar Spine Loading

  • 会议论文

  • 发表日期：

    2025年

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  • Feng Hu,
  • Ilias Theodorakos,
  • Michael Skipper Andersen,
  • Raphaël Dumas,
  • Xuguang Wang

摘要

Lumbar spine loading is considered as an indicator of sitting discomfort. The internal loading can be measured using force sensor implants, but this is an invasive method thus limited to a very small number of studies. Alternatively, spinal loading can be estimated non-invasively using a musculoskeletal (MSK) model. However, few studies evaluated a MSK model by comparing estimated and measured spine loading in seated conditions. This study aimed to evaluate a MSK model by comparing the trend of the simulated resultant force at L1 vertebra with in-vivo measurements in ten different seating conditions. Results show a highly correlated (r = 0.98) trend between the model prediction and experimental ground truth, suggesting the MSK model has possibility to be used for seating research.