Concave polyethylene component improves biomechanical performance in lumbar total disc replacement—Modified compressive-shearing test by finite element analysis

2012 ◽  
Vol 34 (4) ◽  
pp. 498-505 ◽  
Author(s):  
Wen-Chuan Chen ◽  
Yu-Liang Liu ◽  
Kun-Jhih Lin ◽  
Colin Joseph McClean ◽  
Hung-Jen Lai ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Total Disc Replacement ◽  
Disc Replacement ◽  
Element Analysis ◽  
Lumbar Total Disc Replacement

WEAR PREDICTION OF THE LUMBAR TOTAL DISC REPLACEMENT USING FINITE ELEMENT METHOD

2016 ◽  
Vol 16 (02) ◽  
pp. 1650004 ◽  
Author(s):  
S. SHANKAR ◽  
D. KESAVAN
Keyword(s):  
Finite Element ◽  
Total Disc Replacement ◽  
International Standards ◽  
Disc Replacement ◽  
Wear Testing ◽  
Fe Model ◽  
Lumbar Total Disc Replacement ◽  
Metal Metal ◽  
International Standards Organization ◽  
Testing Protocols

Wear in the total disc replacement (TDR) is a significant clinical concern which reduces the lifetime of prosthesis. It induces the formation of potentially harmful debris and involves the risks of a new surgical operation. The objective of this paper is to estimate the wear using finite element (FE) concepts considering various combination of materials: metal-polymer, ceramic–ceramic and metal–metal bearing couples for lumbar total disc replacement (LTDR). The FE model was subjected to wear testing protocols according to loading profile of International Standards Organization (ISO) 18192 standards up to 10 million cycles. The present study revealed that, Alumina–Alumina (Al2O3–Al2O3) bearing pair is suitable one for the TDR process because of less volumetric wear, hence it could be considered in LTDR designs.

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