Biomechanics of posterior lumbar interbody fusion with unilateral fixation

VernacularTitle:后路腰椎间融合单侧内固定术的生物力学研究
Author: Zhanzhu HUANG ; Weiguo CHEN ; Ying GUO
Publication Type:Journal Article
Keywords: Lumbar vertebrae; Spinal fusion; Biomechanics
From: Chinese Journal of Primary Medicine and Pharmacy 2013;20(2):232-234
CountryChina
Language:Chinese
Abstract: 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 spondylolisthesis 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 stability was enough after operation.