Analysis of compressive strength and subsidence of a vertebral body cage with Taguchi methods
| Autor: | Hsi-Ching Hsu, Yu‐Hsiang Tsai, Ching-Kong Chao, Wen-Hsien Hsu, Ching-Chi Hsu |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Journal of the Chinese Institute of Engineers. 33:541-550 |
| ISSN: | 2158-7299 0253-3839 |
| Popis: | A titanium mesh cage (TMC) might develop subsidence and cause local kyphotic deformity of the spine. For prevention of this complication, this study was designed to find the most appropriate spike design for a vertebral body cage (VBC). In order to investigate the subsidence of a VBC, three‐dimensional finite element models of the L5 spinal model with a nonlinear contact analysis have been developed. Then, the Taguchi robust design method was used to evaluate spike designs. Finally, the mechanical experiment was developed to obtain the compressive strength of the VBC. For the results of the FEM‐based Taguchi method, the spike row, the spike obliquity, and the spike height were especially important factors for preventing the subsidence. The optimum combinations were pyramidal spike type, a spike height of 2 mm, a spike diameter of 1.4 mm, an oblique geometry, 11 rows per 28 mm, and an inner diameter of 10 mm. For the results of the experiment, the good relationship between finite element simulatio... |
| Databáze: | OpenAIRE |
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