Reconstruction of the tendon-bone junction with tubular titanium web:A miniature swine model study

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K10877
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthopaedic surgery
• Research Institution: Jikei University School of Medicine
• Principal Investigator: MARUMO KEISHI 東京慈恵会医科大学, 医学部, 教授 (70199925)
• Co-Investigator(Kenkyū-buntansha): 池田 亮 東京慈恵会医科大学, 医学部, 講師 (20439772) ; 齋藤 充 東京慈恵会医科大学, 医学部, 准教授 (50301528)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: チタン再繊維 / 腱・骨接合部 / 再建靱帯 / ミニブタ

Outline of Final Research Achievements

We performed reconstruction of the tendon-bone junction using the tubular titanium-web (TW) made from titanium microfibers. Four months postoperatively tendon-like and bone-like tissue ingrowth was observed within the TW in histological specimens. Furthermore, since maturity of the ingrowing tissue within the tendon matrix, the titanium-web and the bone was similar to the normal tissue, we confirmed that bone and tendon could be joined by the TW. The reconstruction occurred not because of impaired maturity of collagen, the main structural component of tendons and bones, but due to formation of a tissue matrix containing tissue-specific collagen cross-links patterns.

Free Research Field

医歯薬学

Academic Significance and Societal Importance of the Research Achievements

移植腱がリモデリングにより靱帯様組織に変化していく際に、早期に靱帯特有の架橋のパターンを誘導し、かつ十分な架橋の形成を促進することは、本来の靱帯の機能を取り戻すためには重要である。