后路腰椎间融合单侧内固定术的生物力学研究  

Biomechanics of posterior lumbar interbody fusion with unilateral fixation Huang

作　　者：黄占柱 陈为国[1] 郭颖[1] 

机构地区：[1]河北省玉田县医院骨三科,064100

出　　处：《中国基层医药》2013年第2期232-234,共3页Chinese Journal of Primary Medicine and Pharmacy

摘　　要：目的探讨后路腰椎间融合单侧内固定术的生物力学特点。方法采用15具新鲜小牛脊柱标本，分为正常组、L5S1。滑脱的滑脱组、LSS1滑脱使用后路腰椎间融合单侧内固定术的实验组，测试各组的生物力学特性。结果经采用后路腰椎间融合单侧内固定术后，在轴向压缩、前屈、后伸、侧弯工况下，实验组平均轴向刚度、水平剪切刚度、扭转强度和扭转刚度均较滑脱组增加，其数值与正常组差异无统计学意义（均P〉0．05），与滑脱组差异有统计学意义（P〈0．01，P〈0．05）。结论采用后路腰椎间融合单侧内固定术后，在轴向压缩、前屈、后伸、侧弯工况下，腰椎的轴向刚度、水平剪切刚度、扭转强度和扭转刚度较滑脱时明显提高，能够达到腰椎生理正常状态，满足对手术固定后即刻稳定性的需要。Objective To study the biomechanics of posterior lumbar interbody fusion with unilateral fixation. Methods 15 bovine lumbers were divided into three groups （intact group, spondylolisthesis group, posterior lumbar interbody fusion with unilateral fixation group as experimental group）. Nondestructive tests were performed in pure compression,flexion,extension,and lateral bending on every group. Results Compared with intact group and spon- dylolisthesis group, after posterior lumbar interbody fusion with unilateral fixation, the mean straining of vertebral body in experimental group increased. The value of experimental group had significant difference from spondylolisthesis group（P 〈 0.01,P 〈 0.05）. And the value of experimental group was proximal to intact group （P 〉 0.05）. Conclusion After operation with posterior lumbar interbody fusion with unilateral fixation, the stiffness of vertebral body was approached the intact group during axis compression, flexion, extension and lateral bending. And the initial stabihty was enough after operation.

关 键 词：腰椎 脊柱融合术 生物力学 

分 类 号：R687[医药卫生—骨科学] R3[医药卫生—外科学]