Ma Xiang-yang, Yin Qing-shui, Wu Zeng-hui, Xia Hong, Zhong Shi-zhen, Liu Jing-fa, Xu Da-chuan
Department of Orthopaedics, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, China.
Zhonghua Wai Ke Za Zhi. 2005 Jun 15;43(12):774-6.
To study the relevant position of the pedicle of C1 to the lateral mass of C(2-4), set up an identification technique for the entry point decision of C1 pedicle screw by using the lateral mass of C(2-4) as anatomic landmarks.
Twenty cadaver specimens were used to measure the distance from the sagittal midline of spine to the medial border, the midpoint and the lateral border of C1 pedicle or the lateral mass of C2, C3 or C4. The anatomic relation between the measurements data of C1 pedicle and that of the lateral masses of the cervical vertebrae were analyzed, and the technique of C1 pedicle screw fixation was established.
The average medial border of the lateral mass of C2, C3 and C4 was 0.37 mm, 0.27 mm and 0.24 mm lateral to that of C1 pedicle, the average midpoint of the lateral mass of C2, C3 and C4 was 1.18 mm, 1.41 mm and 1.74 mm lateral to that of C1 pedicle, and the average lateral border of the lateral mass of C2, C3 and C4 was 1.96 mm, 2.54 mm and 3.24 mm lateral to that of C1 pedicle, respectively.
There is a steady anatomic location relation between C1 pedicle and the lateral mass of C2, C3 or C4. As well as the lateral mass of C2, the lateral mass of C3 or that of C4 could be convenient anatomic landmarks to determine the location of C1 pedicle and the position of C1 pedicle screw entry point.
研究C1椎弓根与C2 - 4侧块的相关位置关系，以C2 - 4侧块为解剖标志建立C1椎弓根螺钉进钉点判定的识别技术。
采用20具尸体标本，测量脊柱矢状中线至C1椎弓根内侧缘、中点、外侧缘或C2、C3、C4侧块的距离。分析C1椎弓根测量数据与颈椎侧块测量数据之间的解剖关系，建立C1椎弓根螺钉固定技术。
C2、C3、C4侧块的平均内侧缘分别位于C1椎弓根内侧缘外侧0.37 mm、0.27 mm、0.24 mm处；C2、C3、C4侧块的平均中点分别位于C1椎弓根中点外侧1.18 mm、1.41 mm、1.74 mm处；C2、C3、C4侧块的平均外侧缘分别位于C1椎弓根外侧缘外侧1.96 mm、2.54 mm、3.24 mm处。
C1椎弓根与C2、C3或C4侧块之间存在稳定的解剖定位关系。C2、C3或C4侧块均可作为确定C1椎弓根位置及C1椎弓根螺钉进钉点位置的便捷解剖标志。
