【摘要】 目的设计研制了一种异种骨腰椎融合器,并进行生物力学测试,为临床提供生物力学参数。方法取24具新鲜成年男性L₃-L₄腰椎标本,分别对L₃-L₅（正常组）、模拟后路间盘L_3,4摘除置融合器（对照1组）、模拟后路间盘L_3、4 L_4、5摘除置融合器（对照2组）、模拟后路间盘L_3、4摘除置融合器附加椎弓根钉固定（对照3组）、模拟后路间盘L_3、4L_4、5摘除置融合器附加椎弓根钉固定（对照4组）进行前屈、后伸、扭转、轴向压缩和腰椎移位时融合器的最大拨出力实验,还对以上各组标本进行了黏弹性实验。结果得出了各组标本前屈、后伸、轴向压缩、扭转和应力松弛、蠕变力学性能指标。结论所设计的椎间融合器和椎弓根钉固定椎体后具有较好的抗压、抗扭、屈伸等能力。更多还原

【Abstract】 Objective To designed and developed a kind of heterologous bone fusion cage and then do research on the biomechanics properties.Methods We got the lumbar vertebrae L3-L5 from fresh corpses and divided them into five groups.Then did the front flexion,back tensile,left and right torsion and axial compression test on every sample.Also did the viscoelastic properties test on them.Results We got the mechanical property indices of each group on the proneness,aback loll,axial compression,torsion,stress relaxation and creep.Conclusion It possessed best resist compression,torsion resistant, bent loll equal energy force that designed vertebrae fusion ware and centrum after pedicle of vertebral arch nail fixing.更多还原