Biomechanical study of fixation stability with anterior approach screw fixation through C_2 vertebral body to C_1 lateral mass and Gallie's technique
- VernacularTitle:经枢椎体至寰椎侧块螺钉联合Gallie法内固定的生物力学研究
- Author:
Liang GUO
- Publication Type:Journal Article
- Keywords:
Atlantoaxial joint;
Internal fixation;
Three-dimen- sional range of motions;
Stability;
Biomechaniecs;
Reconstruction
- From:
Journal of Chongqing Medical University
2007;0(11):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To determine the three-dimensional stability of atlantoaxial reconstruction with anterior approach screw fixation through C2 vertebral body to C1 lateral mass and Gallie’s technique for C1~2 instability.Methods:25 human cadaveric specimens were randomly divided into 5 groups.The three-dimensional range of motion C1 relatively C2 was measured under five different conditions,the intact state(intact group),odontoid tape Ⅱ fracture(group OTF),fixation with posterior C1~2 transar- ticular screw(group PTS),anterior approach screw fixation through C2 vertebral body to C1 lateral mass(group ASM),ASM and Gallie’s technique(group ASMG). The obtained data were statistically analyzed. Results:The range of motion in all directions group ASMG,ASM and PTS was significantly decreased.There was significant difference among group ASMG,ASM and PTS in flexion/extension and lateral bendings by statistical analysis(P0.05). Conclusion:In vivo biomechanics studies showed that ASMG had unique superiority in the reconstruction of the atlantoaxial stability,especially in controlling the instability of flexion/extension and lateral bendings.It was one kind of reli- able surgical choice for the treatment of the obsolete insta- bility or dislocation of C1~2 joint.
