Biomechanical Evaluation on Cervical spine stabilizing Effects of Cervical Interbody Spinal Fusion Using Allograft Fusion Cage
- VernacularTitle:同种异体骨圈椎体融合术稳定颈椎的生物力学评价
- Author:
Junlin YANG
;
Qingan ZHU
;
Lilong CHEN
- Publication Type:Journal Article
- Keywords:
Cervical vertebrae Spinal fusion Transplantation,homologous Biomechanics
- From:
Chinese Journal of Orthopaedics
1996;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective\ To evaluate the immediate effects and strength of allograft fusion cage(AFC) used for reconstructing stability of cervical spine. Methods\ Discs of C 5 and C 6 were resected on 8 fresh human cervical spine specimens, and autogenous iliac bone grafts(AIBG), and AFCs were implanted into the intervertebral spaces respectively. Compression test, pull out test and segmental motion measurement were studied.Results\ Comparing with intact and AIBG groups, the range of motions of C5-6 in AFC group were decreased in all directions except for extension; with (502?114) N compressive load,the vertebrae in AFC group were broken while the AFC were intact, but the AIBG were broken at (135?42) N load; with 300 N drawing load,no loosening was found between AFCs and vertebra, but it was found between AIBG and vertebra at 60 N load. Conclusion\ AFC could provide enough support,anti slide ability and could remain or increase the height of intervertebral spaces. It completely meets clinical and biomechanical requirements.
