双侧峡部裂对腰椎稳定性影响的实验研究  

An experimental study on the stability of spondylolysis lumbar spine

作　　者：杨建成[1,2] 靳安民[1,2] 邵振海 朱青安[1,2] 

机构地区：[1]第一军医大学第二附属医院骨科 [2]第一军医大学解放军医学生物力学实验室

出　　处：《中国临床解剖学杂志》1999年第2期177-178,共2页Chinese Journal of Clinical Anatomy

摘　　要：目的：研究双侧峡部裂对腰椎三维稳定性的影响。方法：实验材料为８具成人新鲜腰椎标本，切断Ｌ２双侧峡部，通过脊柱三维运动试验机，对标本施加前屈／后伸、侧弯和轴向旋转等６种力偶矩（１０Ｎ．ｍ），由脊柱三维运动分析系统得到腰椎节段的运动范围。结果：双侧峡部断裂后，腰椎前屈／后伸及左／右旋转运动范围分别增加２６．６％、５５．９％、１００．９％、１１５．８％，较正常标本有显著性增大，而左／右侧弯变化不大。结论：峡部对腰椎三维稳定具有重要的力学作用，双侧峡部裂导致腰椎不稳。Objective:The experiment was designed to evaluate the three dimensional stability of spondyloic lumbar spines.Methods:Eight fresh adult human lumbar specimens were tested with a three dimensional spinal motion test machine,with the maximum loading of 10.0N.m.Three dimensional movements were measured in intact state and spondylolysis.Results:The results showed that the ranges of motions of the spondylolic spines increased significantly compared with intact spines in flexion,extension and axial rotation.Conclusions:The data demonstrated that pars interarticularies played a very important role in the stabilization of the lumbar spine.

关 键 词：腰椎峡部裂 稳定性 生物力学 

分 类 号：R681.5[医药卫生—骨科学] R318.01[医药卫生—外科学]