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KMID : 1137820130340010014
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의공학회지
2013 Volume.34 No. 1 p.14 ~ p.23
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Evaluation of Biomechanical Stability of Newly Developed Revision Total Knee Arthroplasty through Strain and Stress Distribution Analysis within the Tibia: Finite Element Analysis
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Han Paul
Jang Young-Woong
Yoo Oui-Sik
Kim Jung-Sung
Kim Han-Sung
Lim Do-Hyung
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Abstract
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In this study, biomechanical stability of the newly developed revision total knee arthroplasty (rTKA) was evaluated through strain and stress distribution analysis within the implanted proximal tibia using a three-dimensional finite element (FE) analysis. 2000N of compressive load (about 3 times body weight) was applied to the condyle surface on spacer, sharing by the medial (60%) and lateral (40%) condyles simulating a stance phase before toe-off. The results showed that PVMS within the revision total knee arthroplasty and the proximal tibia were less than yield strength considering safe factor 4.0 (rTKA: less than 10%, Cortical bone: less than 70%, Cancellous bone: less than 70%). The materials composed of them and the strain and stress distributions within the proximal tibia were generally well matched with those of a traditional revision total knee arthoplasty (Scorpio TS revision system, Stryker Corp., Michigan, USA) without the critical damage strain and stress, which may reduce the capacity for bone remodeling, leading to bone degeneration. This study may be useful to design parameter improvement of the revision total knee arthoplasty in biomechanical stability point of view beyond structural stability of revision total knee arthoplasty itself.
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KEYWORD
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Revision Total Knee Arthroplasty, Finite Element Analysis, Stress and Strain Distribution, Biomechanical Stability, Structural Stability
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