L5S1椎体结构的CT测量及经皮椎弓根单向锁定的可行性研究  被引量:4

Radiographic research of lumbosacral unidirectional locking axial fusion fixation

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作  者:宋西正[1] 王文军[1] 易明[1] 张树军[1] 曾德辉[2] 马向阳[1] 易新[1] 王程[1] 王善坤[1] 

机构地区:[1]南华大学附属第一医院,衡阳421001 [2]南华大学附属南华医院

出  处:《中华骨科杂志》2015年第10期1068-1074,共7页Chinese Journal of Orthopaedics

基  金:国家自然科学基金面上项目(81272055/H0612);湖南省自然科学省市联合基金重点项目(11JJ8007)

摘  要:目的探讨L5S1椎体结构及直肠后间隙人路行L5S1椎间轴向固定并经皮椎弓根单向锁定的可行性。方法随机选取2012年10月至2013年3月门诊或住院患者的正常L,S。椎体螺旋CT资料,男、女各100例;年龄18~60岁,平均45.7岁;腰骶椎发生退行性变98例,L5S1椎间盘膨出36例,L5S1椎间盘突出34例,L5S1椎间隙塌陷并椎间孔变窄32例。通过CT三维重建软件设定指标:矢状面L5S1椎体宽度(AB、DE),轴向固定基线(Q)穿行椎体上、下终板及椎弓根锁定线在中心矢状面的投影线(O、P)交点,L,椎体高度(GH),L5椎弓根锁定线与下终板距离(CH),S1椎弓根锁定线与上终板距离(IF),S1椎体高度(IJ),椎间盘高度(HI),L5椎弓根高(UN),S,椎弓根高度(WZ),Q线与O、P线相交为α、β角(头倾角),水平面L5S1椎弓根锁定线(R、S)与椎体中心矢状面(O、P)相交为γ、δ角(外展角),L5椎弓根宽度(MN),S,椎弓根宽度(XY)。采用计算机三维重建软件平台直接对设定指标进行测量。结果矢状面男、女两组AB(t=8.232,P=0.000)、DE(t=11.832,P=0.000)、GH(t=6.614,P=0.000)、CH(t=6.417,P=0.000)、IF(t=4.898,P=0.000)、U(t=6.859,P=0.000)、UN(t=4.590,P=0.000)、WZ(t=6.675,P=0.000)、MN(t=6.2.403,P=0.000)、XY(t=3.999,P=0.000)比较,差异均有统计学意义;男、女两组α角(t=1.293,P=0.197)、β角(t=-0.167,P=0.867)差异无统计学意义,水平面1角(t=0.066,P=0.947)、δ角(t=一0.093,P=0.926)差异亦无统计学意义。结论只要椎弓根中心与椎体中心为一直线,L5S1椎间轴向固定的同时可经皮行椎弓根单向锁定。Objective To evaluate the feasibility of lumbosacral (L5S1) vertebral axial fusion fixation with unidirectional locking through retrorectal approach. Methods Two hundred patients whose age ranged from 18 to 60 years were randomly se- lected from Department of Radiology of the First Affiliated Hospital of the University of South China. They were from outpatient or inpatient department with 100 patients at each gender. The parameters included the width of L5S1 vertebral body (AB and DE), Axi- al base line Q and projection of fusion fixation of L5S1 penetrates endplates of the vertebra and Pediele screw locking line in the me- dian plane (O, P), height of L5 vertebral body (GH) ,distance between the pedicle screw locking line of L5 and the lower endplate of L5 (CH), distance between the pediele locking line of SI and the lower endplate of SI (IF), height of S1 (IJ), height of the interverte- bral disc of LSL(HI), height of the pediele of L5(UN), height of the pedicle S, (WZ), the angle between Q line and O line (α), the an- gle between Q line and P line (β), the abduction angle of γ and δ (the cross of R, O fines and S, P lines), width of the pediele L5 (MN), and width of the pedicle S1 (XY). All parameters are measured directly by computed 3-D reconstruction software and ana- lyzed by SPSS 18.0 software. Results There were significant differences between the male and female groups in parameters AB (t=8.232, P=0.000), DE (t=11.832, P=0.000), GH (t=6.614, P=0.000), CH (t=6.417, P=0.000), IF (t=4.898, P=0.000), IJ (t= 6.859, P=-0.000), UN (t=4.590, P=0.000), WZ (t=6.675, P=0.000), MN (t=6.2.403, P=0.000) and XY (t=3.999, P=0.000). No statistical difference was found in angle α (t=1.293, P=0.197), [3 (t=-0,167, P=0.867), 7 (t=0.066, P=0.947) or δ (t=-0.093, P= 0.926). Conclusion As long as the center of the pediele isthmus and the center of the vertebral body are on the same straight line, axial fus

关 键 词:腰椎 骶骨 脊柱融合术 摄影测量法 

分 类 号:R687.3[医药卫生—骨科学]

 

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