滑槽钉生长棒内固定系统置入对幼猪脊柱发育的影响  

Effect of instrumentation growing rods of sliding pedicle screw system insertion on growth of immature porcine spine

作　　者：王文军[1] 薛静波[1] 晏怡果[1] 王程[1] 王麓山[1] 李超[1] 钟坚[1] 肖文连[1] 

机构地区：[1]南华大学第二附属医院脊柱外科,湖南衡阳421001

出　　处：《中华实验外科杂志》2011年第7期1074-1075,共2页Chinese Journal of Experimental Surgery

基　　金：南华大学研究生科研创新项目（2010XCX11）

摘　　要：目的观察滑槽钉生长棒内固定系统置入对脊柱形态发育的影响。方法将15头3个月龄幼猪随机分为3组，A组（5头）为空白对照组，自T6～T15后路切开，显露椎板；B组（5头）为对照组，置入锁定椎弓根钉棒系统；C组（5头）为实验组，置入滑槽钉生长棒内固定系统。实验的目标设计为瞒、7，T8、9椎体的平均高度，T7／8、T8／9、T9／10椎间盘的平均高度，C组钛棒上下两端滑动的平均距离，应用X线测量并观察脊柱形态学指标的变化。结果术后3个月，C组T6、7，T8、9椎体的平均高度，T7／8、T8／9、T9／10椎间盘的平均高度与A组差异无统计学意义（P〉0．05），而与B组比较显著性增加，差异有统计学意义（P〈0．05），C组钛棒上下两端滑动平均距离44mm。结论滑槽钉生长棒内固定系统对幼猪脊柱的生长发育无明确影响。Objective To investigate the influence of the instrumentation growing rods of sliding pedicle screw system insertion on the growth of the spine in an animal model. Methods A total of 15 pigs （about 3-month age） were randomly assigned into 3 groups： group A, blank control group only exposing posterior lamellar; group B （control group） , inserting the traditional pedicle screw system; group C （test group） , inserting the instrumentation growing rods of sliding pedicle screw system. The average heights of T6, 7, 8, 9, and T7/8, T8/9, T0/10 discs, and the distance of both up- and down-ends of titanium rod sliding in group C were measured. X ray was used to examined the morphology of the spine. Results Three months after operation, the average heights of T6, 7, 8, 9, and T7/8, T8/9, T9/10 discs in group C had no remarkble difference from those in group A （ P 〉 0. 05 ） , but significantly larger than in group B （ P 〈 0. 05 ）. Growth occurred in both up- and down-ends of the titanium rods for a total average of 44 mm. Conclusion The instrumentation growing rods of sliding pedicle screw system placement has no evident influence on the progression of the immature porcine spine.

关 键 词：内固定系统 脊柱 生长 猪 

分 类 号：R687.3[医药卫生—骨科学]