Development and biomechanical evaluation of a model of lumbar interbody fusion device
10.3969/j.issn.1671-8348.2014.04.033
- VernacularTitle:一种新型腰椎间融合器的研制及生物力学评价
- Author:
Jinliang MA
;
Jien ZHANG
;
Kebin LIU
;
Yang YI
;
Fan HUANG
;
Zhongliang DENG
- Publication Type:Journal Article
- Keywords:
biomechanics;
lumbar vertebrae;
intervertebral fusion cage
- From:
Chongqing Medicine
2014;(4):465-468
- CountryChina
- Language:Chinese
-
Abstract:
objective To introduce the design concept and structure of a new type of lumbar intervertebral fusion cage ,and to e-valuate its biomechanical properties .Method A partially bioasorbable interbody fusion cage(PBIFC) made of nano hydroxyapatite and poly amino acid /calcium sulfate copolymer materials was developed .Range of motion(ROM ) ,compressive load ,and pull-out test on flexion ,extension ,lateral bending ,and torsion moment on fresh calf L3/L4 specimens of functional spinal union were carried out of iliac bone group ,PBIFC group ,and nano hydroxyapatite/polyamide 66(nHA/PA66) group .Result Of each movement ,the ROM value of iliac bone group are higher than the other two groups ,the difference was statistically significant (P<0 .05) ,and the ROM value of nHA/PA66 group are higher than PBIFC group ,but no statistical difference(P>0 .05) .The pull-out strength of PB-IFC group are higher than iliac bone group ,and the difference was statistically significant (P<0 .05);The pull-out strength of PB-IFC group is lower than the traditional group ,but no statistical difference(P>0 .05) .The compressive load of iliac bone group was lower than that of two cage group ,the difference was statistically significant (P<0 .05) .The compressive load of PBIFC group is slightly lower than the traditional group ,but no statistical difference(P>0 .05) .Conclusion With good implant stability ,pull-out resistance ,and compression resistance performance ,PBIFC can meet the biomechanics requirements of clinical implant .
