Miller J A, Haderspeck K A, Schultz A B
Spine (Phila Pa 1976). 1983 Apr;8(3):331-7. doi: 10.1097/00007632-198304000-00018.
This report concerns the manner in which the intervertebral disc and the posterior elements share loads placed on a lumbar motion segment. A two-dimensional biomechanical model was used to examine this. The model incorporated two rigid bodies to represent the vertebrae and six elastic springs to represent the tissues of the intervertebral disc and the posterior elements. Compression loads were resisted almost totally by the model intervertebral disc, but both the intervertebral disc and the posterior elements contributed substantially to resisting anteroposterior shear and flexion-extension loads. Motion segment morphology was a major determinant of load-sharing in model response to anteroposterior shear.
本报告关注椎间盘和后部结构分担施加于腰椎运动节段负荷的方式。为此使用了二维生物力学模型进行研究。该模型包含两个代表椎体的刚体以及六个代表椎间盘和后部结构组织的弹性弹簧。压缩负荷几乎完全由模型中的椎间盘承受，但椎间盘和后部结构在抵抗前后剪切力和屈伸负荷方面均起到了重要作用。运动节段形态是模型对前后剪切力反应中负荷分担的主要决定因素。
