Biomechanical study on occipitocervical fusion fixed by metallic-rectangular frame
- VernacularTitle:金属框架固定行枕颈融合术的生物力学研究
- Author:
Zengming XIAO
;
Shujin TANG
;
Jieming WEN
- Publication Type:Journal Article
- Keywords:
Occipitocervical fusion;
Spinal Biomechanics;
Internal Fixation;
Metallic-rectangular frame;
Atlanto-acial joint instability
- From:
Orthopedic Journal of China
2006;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To provide the mechanical evidence of self manufactured metallic-rectangular frame on the reconstruction of the stability of occipitocervical junction.[Method]Seven of the adult cervical spinal specimens which were entire wet-cadavers(from occipitale to C_6) were made to simulate the C_(0～2) fracture dislocation.These of specimens dislocated were fixed by metallic-rectangular frame and Occipito-cervical plate respectively.The three dimensional movements of C_(0～2) were recorded through photogrametry with a pure moment of 1.53 Nm.The range of motion(ROM) of each specimens in two fixation was caculated.[Result]Loaded by 1.53Nm,In metallic-rectangular frame fixation,the ROM in flexion,extension,lateral bending and axial rotation were 5.9?、7.7?、5.6?、11.2? respectively,decreased by 157.6%、68.8%、58.9%、131.3%,compared with occipitocervical plate fixation group.[Conclusion]Metallic-retangular frame fixation can reconstruct the stability of Occipitocervical junction immediatey,and is a relativity effective internal fixation for occipitocervical fusion.
