The biomechanical research on the changes of pressures in the C7/T1 intervertebral space after C5/6 cervical artificial disc replacement
- VernacularTitle:C5/6人工颈椎间盘置换后C7/T1椎间隙压力变化的生物力学研究
- Author:
Kanghua LI
;
Sihong LI
;
Guojun LI
;
Jun ZHANG
;
Yuepin HUANG
- Publication Type:Journal Article
- Keywords:
Intervertebral disk/SU;
Cervical spondylosis/SU;
Cervical vertebrae/SU;
Biomechanics
- From:
Journal of Chinese Physician
2009;11(3):289-291
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the stress changes of C7/T1 intervertebral space pre-and post C5/6 discectomy and artificial disc replacement.Method Eleven healthy adult fresh muhisegmental cadaveric cervical spine segments were utilized in this investigation and biomechanically evaluated under the following C5/6 conditions:intact spine,discectomy,and Bryan Disc prosthesis implantation.The load,of neutrality and pure moments of axial,flexion,extension,and lateral bending were applied on each group.The stress changes of the inferior (C7/T1)interverlebral space was detected by modified cyclo-shaped miniature transducer.Result Under axial,anteflexion,and lateral bending loading,the discectomy indicated a significant increase in the stress of the inferiorer(C7/T1)intervertebral space,compared to intact condition and CADR(P＜0.05).Under extension loading,the discectomy indicated an increase in the stress of the inferiorer(C7/T1)intervertebral space,compared to intact condition(P＞0.05).Under axial,flexion,extension and lateral bending loading,the Bryan Disc prosthesis implantation indicate minor increase of the stress in the inferior(C7/T1)intervertebral space to intact condition(P＞0.05).Conclusion There was no difference between the C5/6 ADR and intact spine group.The discectomy of the Cs/6 can increase the stress of the C7/T1 intervertebral spaoe.
