The Role of Multifidus in the Biomechanics of Lumbar Spine: A Musculoskeletal Modeling Study.
The Role of Multifidus in the Biomechanics of Lumbar Spine: A Musculoskeletal Modeling Study.
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多裂肌在腰椎生物力学中的作用：肌肉骨骼模型研究
DOI：
10.3390/bioengineering10010067
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发表时间：
2023-01-04
期刊：
影响因子：
--
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中科院分区：
文献类型：
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背景：多裂肌在腰椎生物力学中的作用仍不清楚。目的：本研究旨在探讨多裂肌在腰椎建模中的作用以及不对称多裂肌萎缩对腰椎生物力学的影响。方法：本研究考虑了躯干肌肉骨骼模型中五种不同的多裂肌状况：第 1 组（具有整个多裂肌）、第 2 组（无多裂肌）、第 3 组（具有最大等长力一半的多裂肌）、第 4 组（L5/S1 水平上的不对称多裂肌萎缩）和第 5 组（L4/L5 水平上的不对称多裂肌萎缩）。为了测试不同的多裂肌情况对腰椎的影响，模拟了四个躯干弯曲角度（0°、30°、60°和90°）。肌肉激活和肌肉力量的计算是使用OpenSim中的静态优化功能完成的。然后计算L5/S1和L4/L5水平的关节反力并进行组间比较。结果：在躯干屈曲任务中，没有多裂肌的模型在 L4/L5 水平上具有最高的归一化压缩力。在第2组模型产生的极端情况下，L4/L5水平上的归一化压缩力分别为上身重量的444%（30°屈曲）、568%（60°屈曲）和576%（90°屈曲），分别是第1组相应模型计算值的1.82倍、1.63倍和1.13倍。在90°屈曲中，成功第2组的模拟率为49.6%，其次是第3组（84.4%）、第4组（89.6%）、第5组（92.8%）和第1组（92.8%）。结论：结果表明，将多裂肌纳入肌肉骨骼模型对于提高模拟成功率和减少高估腰椎压缩载荷的发生率非常重要。不对称的多裂肌萎缩对躯干屈曲姿势下的下腰椎影响可以忽略不计。结果强调了多裂肌在平衡下背部负载方面的微调能力以及将多裂肌纳入躯干肌肉骨骼建模的必要性。
Background: The role of multifidus in the biomechanics of lumbar spine remained unclear. Purpose: This study aimed to investigate the role of multifidus in the modeling of lumbar spine and the influence of asymmetric multifidus atrophy on the biomechanics of lumbar spine. Methods: This study considered five different multifidus conditions in the trunk musculoskeletal models: group 1 (with entire multifidus), group 2 (without multifidus), group 3 (multifidus with half of maximum isometric force), group 4 (asymmetric multifidus atrophy on L5/S1 level), and group 5 (asymmetric multifidus atrophy on L4/L5 level). In order to test how different multifidus situations would affect the lumbar spine, four trunk flexional angles (0°, 30°, 60°, and 90°) were simulated. The calculation of muscle activation and muscle force was done using static optimization function in OpenSim. Then, joint reaction forces of L5/S1 and L4/L5 levels were calculated and compared among the groups. Results: The models without multifidus had the highest normalized compressive forces on the L4/L5 level in trunk flexion tasks. In extreme cases produced by group 2 models, the normalized compressive forces on L4/L5 level were 444% (30° flexion), 568% (60° flexion), and 576% (90° flexion) of upper body weight, which were 1.82 times, 1.63 times, and 1.13 times as large as the values computed by the corresponding models in group 1. In 90° flexion, the success rate of simulation in group 2 was 49.6%, followed by group 3 (84.4%), group 4 (89.6%), group 5 (92.8%), and group 1 (92.8%). Conclusions: The results demonstrate that incorporating multifidus in the musculoskeletal model is important for increasing the success rate of simulation and decreasing the incidence of overestimation of compressive load on the lumbar spine. Asymmetric multifidus atrophy has negligible effect on the lower lumbar spine in the trunk flexion posture. The results highlighted the fine-tuning ability of multifidus in equilibrating the loads on the lower back and the necessity of incorporating multifidus in trunk musculoskeletal modeling.
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DOI：
10.1002/jbmr.4222
发表时间：
2021-04
期刊：
Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
影响因子：
--
作者：
Mokhtarzadeh H;Anderson DE;Allaire BT;Bouxsein ML
通讯作者：
Bouxsein ML
DOI：
10.1016/j.ergon.2022.103279
发表时间：
2022-02-11
影响因子：
3.1
作者：
Larson, Robert E.;Johnson, A. Wayne;Mitchell, Ulrike H.
通讯作者：
Mitchell, Ulrike H.
DOI：
10.1177/0954411920917311
发表时间：
2020-05-06
影响因子：
1.8
作者：
Nawayseh, Naser;Hamdan, Sadeque;Taiar, Redha
通讯作者：
Taiar, Redha
影响因子：
3.5
作者：
Christophy, Miguel;Senan, Nur Adila Faruk;O'Reilly, Oliver M.
通讯作者：
O'Reilly, Oliver M.
影响因子：
2.8
作者：
Gilligan, Christopher;Volschenk, Willem;Eldabe, Sam
通讯作者：
Eldabe, Sam