Biomechanical testing of neotype retropharyngeal cervical hook-plate for atlantoaxial instability
- VernacularTitle:新型上颈椎前路钩状钛板治疗寰枢椎不稳的生物力学测试
- Author:
Bin CAI
;
Yiguo YAN
;
Wenjun WANG
- Publication Type:Journal Article
- Keywords:
atlantoaxial instability;
biomechanics;
titanium plates;
upper cervical;
internal fixation
- From:
Orthopedic Journal of China
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective] To analyze the mechanics of neotype retropharyngeal cervical hook-plate(RCHP)for atlantoaxial instability with biomechanical testing.[Methods]Six fresh adult craniocervical specimens(C0～3)used for testing the biomechanical instability were all putted into following five test courses:intact,instability(Type ⅡOdontoid fracture),RCHP,Anterior C1、2 transarticular screw fixation,brooks.Repeated statistical analysis of the data was performed using the SPSS 13.0 software package.Measures were performed with SNK testing method to determine whether significant differences existed,P=0.05.[Results]Biomechanical testing showed that,compared with the controlled group and the injured group,each fixation course significantly decreased ROM in all test modes.In the ROM of flexion,there was no significant difference between RCHP and Brooks(P=0.525),but both of them was higher than anterior C1、2 transarticular screw fixation(P
