胸腰椎椎弓根内径的测量及其临床意义.pdfVIP

162 中国脊柱脊髓杂志 200 1 年第 11 卷第 3 期 　　Chi nese J ou rnal of Sp i ne an d Sp i nal Cord , 200 1 , Vol . 11 , N o. 3 基础研究 胸腰椎椎弓根内径的测量及其临床意义 1 2 2 3 杜心如 ,赵玲秀 ,张一模 ,叶启彬 ( ) 中图分类号 :R322 33 　　文献标识码 :A 　　文章编号 :1004406X 200 1 030 16203 摘要 　目的:为选择合适直径的椎弓根螺钉提供客观依据 。方法 :在 50 具脊柱标本上对 T11～L 5 椎弓根的形态及 其内纵径 、横径进行了观察 。结果 : T11～L 3 椎弓根横断面呈椭圆形 ,L4 为近圆形或近方形 ,L 5 为扁椭圆形 。椎弓 根内纵径 T11 12 3 ±13mm , T12 12 0 ±16mm ,L 1 112 ±17mm ,L2 10 1 ±18mm ,L 3 10 0 ±2 0mm ,L4 93 ± 15mm ,L 5 94 ±16mm 。内横径 T11 54 ±0 9mm , T12 55 ±11mm ,L 1 53 ±11mm ,L2 54 ±16mm ,L 3 68 ±17mm ,L4 85 ±17mm ,L 5 130 ±2 4mm 。内横径小于 4mm 者 T11 53 % , T12 15 % ,L 1 259 % ,L2 30 3 % , ( ) L 3 81 % ,L4 2 6 % 。结论 :部分 T11～L4 椎弓根内横径过小 ≤4mm ,不宜选择做椎弓根螺钉内固定 。否则可能 成为导致椎弓根皮质破裂的原因之一 。 关键词 　椎弓根 ; 内径 ;解剖 ;螺钉 Measurement of the innerdiameter of pedicle in thoracolumbar spine and its clinical signif icance/ D U Xinru , ZHAO Lingxiu , ZHANG Yimo ,et al/ / Chinese Journal of Spine and Spinal Cord ,2001 , 11( 3) :162～164 Abstract 　Objective :to measure t he innerdiameter of p edicle in t horacolumbar spine for selection of t he prop er screw . Method :The innerdiameter of p edicle in t horacolumbar spine were measured in 50 sp ecimens. Result :The vertical inner diameter were T11 12 3 ±13mm , T12 12 0 ±16mm ,L 1 12 ±17mm ,L2 10 1 ±18mm ,L 3 10 0 ±2 0mm ,L4 93 ±15mm ,L 5 94 ±16mm ;t he horizontal one were T11 54 ±0 9mm , T12 55 ±11mm ,L 1 53 ±11mm ,L2 54 ± 16mm ,L 3 68 ±17mm ,L4 85 ±17mm ,L 5 130 ±2 4mm ;t he app earance rate of sp ecimens whose horizontal diam eter less t han 4mm was 53