DEVELOPMENT OF PEDIATRIC POLYCENTRIC KNEE JOINT FROM MATERIALS PLANNING VIEWPOINT : Applicability of Fine Ceramics and Design of Prosthesis
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概要
- 論文の詳細を見る
For children under age four, the options among prosthetic knees are less than ideal as all of the knees are made of metals being too heavy and/or large for toddlers. This study aimed at verifying the applicability of fine ceramics in pediatric prosthetic knee joint. A basic design was constructed and modified by CAD application to obtain a polycentric configuration. Four different combinations of materials-alumina/UHMW-HDPE, alumina/PCTFE, zirconia/UHMW-HDPE, and zirconia/PCTFE-were tested using FEM analysis. Results showed points of stress concentration. Therefore, a shock-absorption part made of elastomer, filled with CMC solution, and with discreet particles of PCTFE on its outside for low friction was introduced in the design and tested using the alumina/PCTFE combination. Models without particles and without shock-absorption part were also tested for comparison. Results demonstrated that the design using alumina/PCTFE plus the elastomer part with particles was the most successful, having the lowest rate of variation of stress, average and maximum stress.
- 日本デザイン学会の論文
- 2001-07-31
著者
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KUBO Mitsunori
Chiba University
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AOKI Hiroyuki
Chiba University
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Aoki H
Department Of Polymer Chemistry Graduate School Of Engineering Kyoto University
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Terauchi F
Chiba University
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Aoki H
Okayama Univ. Sci.
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KUBO Mitsunori
Faculty of Engineering, Chiba University
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TERAUCHI Fumio
Faculty of Engineering, Chiba University
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AOKI Hiroyuki
Faculty of Engineering, Chiba University
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MEDEIROS AnaCristinaBarbosa
Graduate School of Science and Technology, Chiba University
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Medeiros Anacristinabarbosa
Graduate School Of Science And Technology Chiba University
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AOKI Hiroyuki
Dept. of Biol. Sci. Tokyo Metropolitan Univ.
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