Design of the guideline of the prevention of ion release from the frictional surface with the micro motion in a joint prosthesis by the clarification of fretting corrosion mechanism.
Project/Area Number |
26420083
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Design engineering/Machine functional elements/Tribology
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Research Institution | Kitasato University |
Principal Investigator |
Kyoshi Mabuchi 北里大学, 医療衛生学部, 名誉教授 (70118842)
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
|
Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
|
Keywords | 人工股関節 / 微動摩耗 / 不動態被膜 / 摩耗試験 / 腐食電位 / 摩擦ストローク / 金属イオン |
Outline of Final Research Achievements |
A hip prosthesis is designed to be modular, so that there is an interface of two solids where they contact, e.g., the bearing surface consists of a liner and the femoral head or the taper junction between a femoral stem and a head ball. Recently, it has been reported that release of metal ions from these interfaces caused the serious adverse reactions in the patients' body. The main mechanism was supposed the fretting corrosion. The present study aimed to investigate the effects of friction stroke length under reciprocating motion on damage and restoration of the passive film on the interface of contacting flat surfaces of CoCr alloy. As the results of electrical sensing of ion release from the metal surfaces, friction with short strokes can cause damage to the passive film with plastic deformation. Friction with long stroke shortens the restoration time because of mechanical activation of the surface.
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Report
(4 results)
Research Products
(81 results)
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[Presentation] 科学が拡げる精神世界2016
Author(s)
馬渕清資
Organizer
平成27年度理化学研究所研究員総会
Place of Presentation
理化学研究所鈴木梅太郎記念ホール(埼玉県和光市)
Year and Date
2016-02-23
Related Report
Invited
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[Presentation] Limit of engineering in joint prostheses2016
Author(s)
Mabuchi K, Sakai R
Organizer
International Symposium on Artificial Hydrogel Cartilage, Joint Replacement and Related Topics (ISAHC 2016)
Place of Presentation
九州大学伊都キャンパスゲストハウス(福岡県福岡市)
Year and Date
2016-01-26
Related Report
Int'l Joint Research / Invited
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[Presentation] Response of Bone on Stationary Load From the Inplant2015
Author(s)
Masaki Nakao, Kentarou Uchida, Rina Sakai, Kouji Naruse, Masashi Takaso, Kiyoshi Mabuchi
Organizer
28th Annual Congress of the International Society for Technology in Arthroplasty
Place of Presentation
Hilton Hotel Vienna (Vienna, Austria)
Year and Date
2015-09-30
Related Report
Int'l Joint Research
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[Presentation] 滑る2015
Author(s)
馬渕清資
Organizer
トライボロジー会議2015春
Place of Presentation
姫路商工会議所(兵庫県姫路市)
Year and Date
2015-05-28
Related Report
Invited
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