人字嵴顶点法相关研究进展

Advance in related research of herringbone crest vertex technique

人字嵴顶点法是徒手置入腰椎椎弓根螺钉最常用的方法之一,本文从进钉点定位、人字嵴出现率、毗邻结构、进钉点与椎弓根轴线的关系、轴向最大拔出力、置钉角度、进钉深度、手术时间、出血量及手术效果等方面对其进行介绍。腰椎人字嵴变异少,其顶点与椎弓根轴线吻合较好。人字嵴顶点法在一定程度上克服了十字定位法的不足,手术显露范围较小,易于显露,置钉前切口显露时间短,术中出血量少,并发症少,置钉准确率高,椎弓根螺钉固定牢靠。

Herringbone crest vertex technique is one of the techniques which are used the most commonly for inserting lumbar vertebra pedicle screws manually.The location of entrance point,appearing rate of herringbone crest,adjacent structures,relationship between entrance point and pedicle axis,maximum of withdrawal force,angle and depth of screw insertion,time of operation,amount of bleeding and effect of operation are described by this paper to introduce it.Herringbone crest of lumbar vertebra is hardly variant and the vertex of it shows good agreement with pedicle axis.Herringbone crest vertex technique overcomes the shortcomings of cross location technique to some extent,which is easy to expose and needless to expose too much in the operation.The exposing time of incision is short before pedicle screw,the amount of bleeding during operation and the complication is little,the accuracy of pedicle screws is high,pedicle screws is secure.