颈椎单开门OsteoMed M3钉板内固定椎管扩大成形术的疲劳实验  

Fatigue experiment on expansive unilateral open-door laminoplasty of the cervical spine with OsteoMed M3 plate and screws

作　　者：胡孔和[1] 靳安民[1] 段扬[1] 刘成龙[1] 闵少雄[1] 张辉[1] 赵卫东[2] 吴强[3] 

机构地区：[1]南方医科大学附属珠江医院骨科,广州510282 [2]南方医科大学广东省医学生物力学重点实验室,广州510515 [3]汕头大学医学院附属粤北人民医院骨科,广东韶关512026

出　　处：《中国临床解剖学杂志》2011年第3期335-338,共4页Chinese Journal of Clinical Anatomy

基　　金：广东省医学科研基金(A2009678)

摘　　要：目的评价在颈椎单开门椎管扩大成形术中使用OsteoMedM3钉板内固定重建颈椎稳定性的效果。方法在6具颈椎标本上,分别行后路单开门丝线结扎及OsteoMed M3钉板内固定,在脊柱三维运动试验机上行颈椎前屈后伸疲劳运动试验,观察有无丝线断裂或平板螺钉脱出、断裂现象,如有则停止试验并记录发生时的周期。结果丝线结扎组的试验显示所有标本均出现部分缝合的关节囊韧带撕裂、门轴侧易活动,甚至关节囊撕裂、丝线脱落及再关门;而在OsteoMed M3钉板内固定组不损伤关节囊,试验显示未出现钢板螺钉松动、断裂,未出现再关门现象。结论在颈椎单开门椎管扩大成形术中应用OsteoMed M3钉板内固定具有良好的生物力学性能,能重建颈椎稳定性,可满足颈椎后路手术的要求。Objective To evaluate the effects of OsteoMed M3 titanium plate and screws on the initial stability of cervical vertebrae after expansive unilateral open-door laminoplasty.Methods OsteoMed M3 plate and screws and silk ligation were used for an simulated expansive unilateral open-door laminoplasty in six fresh human cervical spine specimens respectively,and fatigue experiment were measured in positions of flexion and extension on three-dimension motional stability test.The cessation of testing would be and the incidence of thread rupture and of loosening of thread and plate and screws were recorded.Results Partial rupture of joint capsule and easy move of the hinge side were seen in all of the specimens in the silk ligation.It were easily seen that rupture of joint capsule and cast of silk thread and reclose of the opened laminate as clinical widely used device for suture of joint capsule.There was no trauma on joint capsule in the OsteoMed M3 plate and screws,and no plate and screw loosening and rupturing and no reclose of the opened laminate.Conclusions Unilateral open-door laminoplasty using OsteoMed M3 titanium plate and screws fixation is good for posterior cervical surgery because of its biomechanical advantage of maintaining signi？cant stabilization of the spine.

关 键 词：椎管扩大成形 内固定 疲劳实验 

分 类 号：R681.55[医药卫生—骨科学]