Biomechanical effects of placement of a disc prosthesis and adjacent vertebral bodies
- VernacularTitle:人工颈椎间盘置换术对邻近节段生物力学影响的三维有限元分析
- Author:
Zhiyuan LI
;
Yong SHEN
;
Yingze ZHANG
- Publication Type:Journal Article
- Keywords:
cervical disc replacement;
biomechanical;
finite element analysis
- From:
Orthopedic Journal of China
2006;0(07):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To present a validated two-functional spinal unit C4~7 finite element model with simulated placement of a disc prosthesis treatment to predict stresses and strains within adjacent vertebal bodies. [Methods]Two finite element models of C4~7 were generated using the CT scans taken from a male patient following placement of a disc prosthesis treatment,which were included with adjacent bodies,intervertebral discs. Simulations were conducted imposing a compression preload combined to a flexion/extension moment,a pure lateral bending moment and a pure torsion moment,and to quantify the stress levels in intervertebral discs,endplate,cancellous bone,cortical bone and adjacent bodies following placement of a disc prosthesis under clinically relevant loading conditions.[Results]The BryanTM disc prosthesis allows to correctly reproduce a physiological motion at the implanted level,and the changes in stresses and strains in levels adjacent to a placement of a disc prosthesis treatment level were minimal.[Conclusion]The artificial cervical disc prosthesis well restores the biomechanical behavior of the intact spine. Moreover,the selection of surgical indications and proper manipulations shoule bve paid more attehtion to.
