Elucidation of adaptive lubrication mechanism with low friction and minimum wear in natural synovial joints and development of artificial hydrogel cartilage with super lubricity based on bionic design

2015 Fiscal Year Final Research Report

• Project/Area Number: 23000011
• Research Category: Grant-in-Aid for Specially Promoted Research
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering; Engineering
• Research Institution: Kyushu University
• Principal Investigator: MURAKAMI Teruo 九州大学, バイオメカニクス研究センター, 特命教授 (90091347)
• Co-Investigator(Kenkyū-buntansha): SAWADA Renshi 九州大学, 大学院工学研究院, 教授 (40380589) ; SAWAE Yoshinori 九州大学, 大学院工学研究院, 教授 (10284530) ; YAMAGUCHI Tetsuo 九州大学, 大学院工学研究院, 准教授 (20466783) ; NAKASHIMA Kazuhiro 九州大学, 大学院工学研究院, 助教 (70315109) ; OKAZAKI Ken 九州大学, 大学病院, 講師 (10398092) ; MATSUDA Shuichi 京都大学, 大学院医学研究科, 教授 (40294938) ; SAKAI Nobuo 九州工業大学, 大学院工学研究院, 准教授 (60346814) ; SUZUKI Atsushi 横浜国立大学, 大学院環境情報研究院, 教授 (90162924) ; YARIMITSU Seido 首都大学東京, システムデザイン学部, 助教 (90723205)
• Co-Investigator(Renkei-kenkyūsha): TANAKA Yoshimi 横浜国立大学, 大学院環境情報研究院, 准教授 (10315830) ; HIRASHIMA Yumiko 横浜国立大学, 教育人間科学部, 教授 (60242377)
• Research Collaborator: HIROKAWA Shunji ; OMATA Seiji ; SASAKI Saori
• Project Period (FY): 2011 – 2015
• Keywords: ハイドロゲル人工軟骨 / 生体関節多モード潤滑 / 生体規範人工関節 / 生体医工学トライボロジー

Outline of Final Research Achievements

The detailed mechanism of adaptive multimode lubrication in natural synovial joints has been elucidated and subsequently those results will be applied to develop innovative artificial cartilage. It was shown that friction and wear properties of hydrogels depend on the types of hydrogels and lubricants. The superior lubrication mechanism of articular cartilage and poly (vinyl alcohol) hydrogels are evaluated from the viewpoint of biphasic and boundary lubrication mechanisms. The PVA hybrid hydrogel artificial cartilage as optimized laminated structure has shown superior lubricity with extremely low friction and minimum wear.

Free Research Field

生体医工学