Anatomical measurement and clinical significance of anterior transarticular screw fixation
- VernacularTitle:前路经寰枢关节螺钉内固定术的解剖学测量及其临床意义
- Author:
Xianhua CAI
;
Wenbing WAN
;
Zhuanghong CHEN
- Publication Type:Journal Article
- Keywords:
anterior approach;
atlantoaxial instability;
atlatoaxial joint;
transarticular screw fixation;
anatomical measurement
- From:
Orthopedic Journal of China
2006;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To provide Chinese morphological data for anterior C1、2 transarticular screw fixation.[Method]With a digital vernier and a goniometer made in China,the anatomic parameters related to anterior C1、2 transarticular screw fixation were measured from 50 pairs of dried Chinese adult human C1 and C2 vertebrae.[Result]In the anterior transarticular screw fixation,the lateral angulation of the screw tract to the sagittal plane ranged from(10.8?2.10)? to(25.13?3.12)?,the posterior anguation to the coronal plane from(8.85?2.12)? to(26.96?3.09)?,the screw tract length was from(17.48?2.1) mm to(25.4?2.59)mm,the distance from medial part of C2 foramen to the middle of C2 body was(14.12?1.28)mm.[Conclusion]It is optimal for the anterior C1、2 transarticular screw fixation to place the anterior C1、2 transarticular screw with the length of 17 mm to 25 mm in lateral angulation ranged from 10? to 25? and the posterior angulation ranged from 9? to 27?.During the procedure,the dissecting distance from the middle of C2 to lateral should not exceed 14 mm.
