摘要
目的探讨经口前路枢椎椎弓根螺钉解剖学与CT测量数据的差异性。方法对60具成年人枢椎标本进行解剖学测量,对20具成年人枢椎标本进行CT钉道扫描,比较解剖学测量和CT扫描两种测量方式其进针点至前正中线的距离、椎弓根的骨性钉道长度、进针的外倾角和下倾角等置钉参数的差异性。结果两种方式在测量椎弓根进钉点至前正中线的距离(左侧、右侧和双侧测量)、骨性钉道长度(左侧和双侧测量)、进钉外倾角(右侧和双侧测量)和下倾角(左侧、右侧和双侧测量)等指标上的差异均有统计学意义(P<0.05)。结论解剖学测量与CT钉道扫描所获得的螺钉置入数据存在一定的差异性,因此临床工作中应综合考虑两种方法的测量结果,在此基础上确定最佳进钉点和进钉角度。
Objective To explore the differences between anatomic and CT measurements for anterior transoral axial pedicle screw placement. Methods C2 vertebrae of 60 adult spines were measured anatomically, while 20 adult spine vertebrae were measured by CT scanning. Measurement parameters of inserting pedicle screws including the distance from screw entrance point to the sagittal midline of spine （OC）, the screw insertion channel length （DE）, the extraversion angle α and the declination angle β of screw insertion were compared between anatomic and CT measurements. Results The differences between anatomic and CT measurements of OC （the left side, the right side and both sides）, DE （the left side and both sides）, α （the right side and both sides） and β （the left side, the right side and both sides） had statistical significance （P 0.05）. Conclusion There are determinate differences of pedicle screws insertion parameters between anatomic and CT measurements. As a result, best screw entrance point and angles should be determined for the integrated consideration of parameters obtained by two measurement methods.
出处
《中国骨科临床与基础研究杂志》
2010年第3期196-199,共4页
Chinese Orthopaedic Journal of Clinical and Basic Research
