Wettenschwiler Patrick D, Lorenzetti Silvio, Ferguson Stephen J, Stämpfli Rolf, Aiyangar Ameet K, Rossi René M, Annaheim Simon
a Empa, Swiss Federal Laboratories for Materials Science and Technology , St. Gallen , Switzerland.
b Institute for Biomechanics , ETH Zurich , Zürich , Switzerland.
Comput Methods Biomech Biomed Engin. 2017 Apr;20(5):558-565. doi: 10.1080/10255842.2016.1261849. Epub 2016 Nov 22.
Backpack carriage is significantly associated with a higher prevalence of low back pain. Elevated compression and shear forces in the lumbar intervertebral discs are known risk factors. A novel method of calculating the loads in the lumbar spine during backpack carriage is presented by combining physical and numerical modelling. The results revealed that to predict realistic lumbar compression forces, subject-specific lumbar curvature data were not necessary for loads up to 40 kg. In contrast, regarding shear forces, using subject-specific lumbar curvature data from upright MRI measurements as input for the rigid body model significantly altered lumbar joint force estimates.
背负背包与下背痛的较高患病率显著相关。腰椎间盘的压缩力和剪切力升高是已知的危险因素。通过结合物理建模和数值建模，提出了一种计算背负背包时腰椎负荷的新方法。结果表明，对于高达40千克的负荷，预测实际的腰椎压缩力时，不需要特定个体的腰椎曲率数据。相比之下，对于剪切力，将来自直立式磁共振成像测量的特定个体腰椎曲率数据用作刚体模型的输入，会显著改变腰椎关节力的估计值。
