Dietrich M, Kurowski P
Spine (Phila Pa 1976). 1985 Jul-Aug;10(6):532-42. doi: 10.1097/00007632-198507000-00007.
Because the etiology of spondylolysis is not well understood, the authors performed an analysis of loads and stresses in human lumbar vertebrae to determine whether purely mechanical factors are likely to cause spondylolytic fractures in a normal spine. To perform these studies, modeling methods were applied. A mechanical system was developed to study muscle forces and reactions in joints of the lumbar spine. Next an optimization approach was applied to find loads on vertebrae and muscle forces. Finally photoelastic experiments were performed to find effective stresses and stress concentrations in low lumbar vertebrae. The analysis showed that the highest stresses appear in parts interarticularis. The results prove that factors of a purely mechanical nature are of fundamental importance in the etiology of spondylolysis.
由于峡部裂的病因尚未完全明确，作者对人体腰椎的负荷和应力进行了分析，以确定单纯的机械因素是否可能导致正常脊柱发生峡部裂性骨折。为进行这些研究，采用了建模方法。开发了一个机械系统来研究腰椎关节的肌肉力量和反应。接下来应用优化方法来确定椎骨上的负荷和肌肉力量。最后进行了光弹性实验，以找出下腰椎的有效应力和应力集中情况。分析表明，最高应力出现在峡部。结果证明，单纯机械性质的因素在峡部裂的病因中具有根本重要性。
