Biomechanical study of atlas odontoid process replacement
- VernacularTitle:寰椎齿状突人工关节置换的生物力学研究
- Author:
Bin LU
;
Guangqi LI
;
Jianwu LI
- Publication Type:Journal Article
- Keywords:
cervical;
transoral approach;
artificial atlas odontoid joint;
biomechanics;
rang of motion;
neutral zone;
fatigue test;
stiffness
- From:
Orthopedic Journal of China
2006;0(18):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective] To investigate the stability and function of atlantoaxial segment after atlas odontoid process artificial joint replacement.[Method]Ten fresh adult human head and neck specimens were chosen for biomechanical models.The range of motion(ROM),neutral zone(NZ)and stiffness under intact state,post-decompression,post-replacement surgery and post-fatigue were measured respectively.[Result]After decompression,ROM,NZ and stiffness in flexion,extension,right and left lateral bending,and right and left axial rotation increased significantly(P0.05)than that in intact state group.[Conclusion]Artificial atlantoaxial joint in this study has been proved to have biomechanical significance in morphology and dynamic.It has advantages of stable replacement,simple operation,less injury and low wear characteristics.It provides a new choice for the atlantoaxial fusion of anterior or posterior approach.
