Hu Yong, He Xian-feng, Gu Yong-jie, Xu Rong-ming, Ma Wei-hu, Ruan Yong-ping, Lin Rong
Department of Orthopaedics, Ningbo 6th Hospital, Ningbo, China.
Chin J Traumatol. 2010 Apr 1;13(2):77-82.
To get morphologic parameters of Chinese adults through observation and measurement on axial laminas, to evaluate the feasibility of placing axial laminar screws and to introduce the technique.
Relative parameters of 28 sets of fresh Chinese adults'axial specimens, including distance from the superior and inferior entry points of axial laminar screws to the superior margins of axial laminas, superior, middle, inferior thickness and height of the axial laminas, length and angle of the axial laminar screw trajectories, distance from the entry points of axial laminar screws to the transverse foramen and central points of the inferior articular process, were measured with a digital caliper and a goniometer. Data were statistically analyzed.
Averagely, distance from the superior and inferior entry points of axial laminar screws to the superior margins of axial laminas was 5 mm and 9 mm, superior, middle, inferior thickness and the height of the axial laminas were 3.2 mm, 6.7 mm, 5.5 mm and 12.8 mm respectively, and the length of the superior and inferior axial laminar screw trajectories was 26.2 mm and 25.5 mm, respectively.
It is feasible and reliable to apply posterior laminar screw fixation techniques to the axes of Chinese adults. Also the C2 laminar screw fixation technique can be taken as a supplementary to conventional posterior screw fixations of C2.
通过对枢椎椎板的观察与测量，获取中国成年人枢椎的形态学参数，评估枢椎椎弓根螺钉置入的可行性并介绍相关技术。
使用数字卡尺和角度测量仪对28套中国成年人新鲜枢椎标本的相关参数进行测量，包括枢椎椎弓根螺钉上下进钉点至枢椎椎板上缘的距离、枢椎椎板的上、中、下厚度及高度、枢椎椎弓根螺钉进钉轨迹的长度和角度、枢椎椎弓根螺钉进钉点至横突孔及下关节突中心点的距离。对数据进行统计学分析。
枢椎椎弓根螺钉上下进钉点至枢椎椎板上缘的平均距离分别为5mm和9mm，枢椎椎板的上、中、下厚度及高度分别为3.2mm、6.7mm、5.5mm和12.8mm，枢椎上下椎弓根螺钉进钉轨迹长度分别为26.2mm和25.5mm。
对中国成年人枢椎应用后路椎板螺钉固定技术是可行且可靠的。C2椎板螺钉固定技术可作为C2常规后路螺钉固定的补充。
