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New bone implantology for seeking implants that does not cause bone degradation

Research Project

Project/Area Number 19H00827
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionUniversity of Toyama (2021-2022)
Osaka University (2019-2020)

Principal Investigator

Ishimoto Takuya  富山大学, 学術研究部都市デザイン学系, 教授 (50508835)

Co-Investigator(Kenkyū-buntansha) 中野 貴由  大阪大学, 工学研究科, 教授 (30243182)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2022: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2021: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2020: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2019: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Keywordsひずみ遮蔽 / インプラント / 骨細胞(オステオサイト) / 骨質 / オステオサイト / 金属インプラントデバイス / 金属インプラント / 骨細胞 / 応力感受 / 形態 / 骨細管 / ひずみセンサー細胞 / 骨強度 / 骨ひずみセンサー
Outline of Research at the Start

本来、失われたり低下してしまった骨の機能を回復する目的で使用されるインプラントによって、かえって骨に重大なダメージ(最悪の場合、骨折につながる)を与えてしまうというパラドックスが大きな問題となっている。この克服のためには、インプラント使用によって生じる「ひずみ遮蔽(本来の健全なひずみが骨に加わらなくなる現象)」を抑制するインプラントを設計する必要がある。そのために、骨密度よりも強く骨の強度を支配する骨アパタイト配向性(並び具合)に基づくインプラント設計が不可欠であり、そのために、ひずみ-配向性の定量的関係を解明するとともに、その生体内でのメカニズムを明らかにする。

Outline of Final Research Achievements

Important fundamental findings for development of implants without causing bone degradation due to strain shielding have been obtained. We found that osteocytes in bone exhibit anisotropy of morphology to efficiently sense the anisotropic strain field produced in bone, that when the anisotropy of the strain field is reduced, the anisotropy of osteocytes is also reduced and their ability to sense the anisotropic strain field is degraded, and that the resulting degradation of bone matrix orientation along the strain direction. In addition, it was found that not only bone resorption but also bone matrix orientation, which is newly formed under strain shielding, was originally degraded under the use of metal implant. In conclusion, we found that a strategy to avoid strain shielding as much as possible and to introduce a mechanism to actively load strain to the implant is indispensable to realize implants that maintain healthy bone.

Academic Significance and Societal Importance of the Research Achievements

骨配向性を指標とすることで、インプラント埋入下での骨の強度が、骨の量的変化(骨密度の低下や骨萎縮)から予測される以上に劣化していることが明らかになった。インプラント開発が骨配向性に基づいて行われることで、骨の機能の劣化を本質的にもたらさないインプラントの獲得につながることが期待される。

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Comments on the Screening Results   Annual Research Report
  • Research Products

    (24 results)

All 2023 2022 2021 2020 2019

All Journal Article (13 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 13 results,  Open Access: 13 results) Presentation (11 results) (of which Invited: 3 results)

  • [Journal Article] Review — Microstructural Control and Functional Enhancement of Light Metal Materials via Metal Additive Manufacturing2023

    • Author(s)
      Ishimoto Takuya、Nakano Takayoshi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 64 Issue: 1 Pages: 10-16

    • DOI

      10.2320/matertrans.MT-MLA2022007

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2023-01-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Outstanding in vivo mechanical integrity of additively manufactured spinal cages with a novel “honeycomb tree structure” design via guiding bone matrix orientation2022

    • Author(s)
      Ishimoto Takuya、Kobayashi Yoshiya、Takahata Masahiko、Ito Manabu、Matsugaki Aira、Takahashi Hiroyuki、Watanabe Ryota、Inoue Takayuki、Matsuzaka Tadaaki、Ozasa Ryosuke、Hanawa Takao、Yokota Katsuhiko、Nakashima Yoshio、Nakano Takayoshi
    • Journal Title

      The Spine Journal

      Volume: 22 Issue: 10 Pages: 1742-1757

    • DOI

      10.1016/j.spinee.2022.05.006

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of the Microstructural Characteristics of Bone Surrounding Anchor Screws Placed under a Horizontal Load by Exploring the Orientation of Biological Apatite Crystals and Collagen Fiber Anisotropy2022

    • Author(s)
      Matsumoto Takaaki、Matsunaga Satoru、Kasahara Masaaki、Kasahara Norio、Nakano Takayoshi、Ishimoto Takuya、Nishii Yasushi
    • Journal Title

      Journal of Hard Tissue Biology

      Volume: 31 Issue: 2 Pages: 79-86

    • DOI

      10.2485/jhtb.31.79

    • ISSN
      1341-7649, 1880-828X
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Periodontal Tissue as a Biomaterial for Hard-Tissue Regeneration following bmp-2 Gene Transfer2022

    • Author(s)
      Kawai Mariko Yamamoto、Ozasa Ryosuke、Ishimoto Takuya、Nakano Takayoshi、Yamamoto Hiromitsu、Kashiwagi Marina、Yamanaka Shigeki、Nakao Kazumasa、Maruyama Hiroki、Bessho Kazuhisa、Ohura Kiyoshi
    • Journal Title

      Materials

      Volume: 15 Issue: 3 Pages: 993-993

    • DOI

      10.3390/ma15030993

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stability of crystallographic texture in laser powder bed fusion: Understanding the competition of crystal growth using a single crystalline seed2021

    • Author(s)
      Ishimoto Takuya、Hagihara Koji、Hisamoto Kenta、Nakano Takayoshi
    • Journal Title

      Additive Manufacturing

      Volume: 43 Pages: 102004-102004

    • DOI

      10.1016/j.addma.2021.102004

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantitative Evaluation of Osteocyte Morphology and Bone Anisotropic Extracellular Matrix in Rat Femur2021

    • Author(s)
      Ishimoto Takuya、Kawahara Keita、Matsugaki Aira、Kamioka Hiroshi、Nakano Takayoshi
    • Journal Title

      Calcified Tissue International

      Volume: 109 Issue: 4 Pages: 434-444

    • DOI

      10.1007/s00223-021-00852-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of microstructure, crystallographic texture, and mechanical properties in Ti-15Mo-5Zr-3Al alloys fabricated via electron and laser beam powder bed fusion technologies2021

    • Author(s)
      Sun Shi-Hai、Hagihara Koji、Ishimoto Takuya、Suganuma Ryoya、Xue Yun-Fei、Nakano Takayoshi
    • Journal Title

      Additive Manufacturing

      Volume: 47 Pages: 102329-102329

    • DOI

      10.1016/j.addma.2021.102329

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Stability of crystallographic texture in laser powder bed fusion: Understanding the competition of crystal growth using a single crystalline seed2021

    • Author(s)
      Takuya Ishimoto, Koji Hagihara, Kenta Hisamoto, Takayoshi Nakano
    • Journal Title

      Additive Manufacturing

      Volume: in press

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantitative evaluation of osteocyte morphology and bone anisotropic extracellular matrix in rat femur2021

    • Author(s)
      Takuya Ishimoto, Keita Kawahara, Aira Matsugaki, Hiroshi Kamioka, Takayoshi Nakano
    • Journal Title

      Calcified Tissue International

      Volume: in press

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility2021

    • Author(s)
      Ishimoto Takuya、Ozasa Ryosuke、Nakano Kana、Weinmann Markus、Schnitter Christoph、Stenzel Melanie、Matsugaki Aira、Nagase Takeshi、Matsuzaka Tadaaki、Todai Mitsuharu、Kim Hyoung Seop、Nakano Takayoshi
    • Journal Title

      Scripta Materialia

      Volume: 194 Pages: 113658-113658

    • DOI

      10.1016/j.scriptamat.2020.113658

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Crystallographic Orientation Control of 316L Austenitic Stainless Steel via Selective Laser Melting2020

    • Author(s)
      Ishimoto Takuya、Wu Siqi、Ito Yukinobu、Sun Shi-Hai、Amano Hiroki、Nakano Takayoshi
    • Journal Title

      ISIJ International

      Volume: 60 Issue: 8 Pages: 1758-1764

    • DOI

      10.2355/isijinternational.ISIJINT-2019-744

    • NAID

      130007887995

    • ISSN
      0915-1559, 1347-5460
    • Year and Date
      2020-08-15
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Impaired bone quality characterized by apatite orientation under stress shielding following fixing of a fracture of the radius with a 3D printed Ti-6Al-4V custom-made bone plate in dogs2020

    • Author(s)
      Keiichiro Mie, Takuya Ishimoto, Mari Okamoto, Yasumasa Iimori, Kazuna Ashida, Karin Yoshizaki, Hidetaka Nishida, Takayoshi Nakano, Hideo Akiyoshi
    • Journal Title

      PLoS ONE

      Volume: 15 Issue: 9 Pages: e0237678-e0237678

    • DOI

      10.1371/journal.pone.0237678

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantitative ultrasound (QUS) axial transmission method reflects anisotropy in micro-arrangement of apatite crystallites in human long bones: A study with 3-MHz-frequency ultrasound2019

    • Author(s)
      Ishimoto Takuya、Suetoshi Ryoichi、Cretin Dorian、Hagihara Koji、Hashimoto Jun、Kobayashi Akio、Nakano Takayoshi
    • Journal Title

      Bone

      Volume: 127 Pages: 82-90

    • DOI

      10.1016/j.bone.2019.05.034

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 粉末床溶融結合法によるバイオミメティックな低ヤング率骨インプラントの創製と応力遮蔽抑制効果2022

    • Author(s)
      石本卓也、中野貴由
    • Organizer
      粉体粉末冶金協会2022年度春季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 骨アパタイトセラミック結晶の配向性に基づく骨質・骨機能評価2022

    • Author(s)
      石本卓也、中野貴由
    • Organizer
      日本セラミックス協会北陸支部講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] チタンおよびチタン合金の3D プリンティングの最先端技術2022

    • Author(s)
      石本卓也、中野貴由
    • Organizer
      第2回日本チタン学会講演大会(2022年度)
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] β型Ti-15Mo-5Zr-3Al金属AM造形体における残留応力2022

    • Author(s)
      石本 卓也、高瀬 文、中野 貴由
    • Organizer
      日本金属学会2022年春期講演(第170回)大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 金属AMによる生体用ハイエントロピー合金の強制固溶体化に基づく高機能化2022

    • Author(s)
      西川 侑希、石本 卓也、永瀬 丈嗣、中野 貴由
    • Organizer
      日本金属学会2022年春期講演(第170回)大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 金属 AM による β 型 Ti 合金の結晶集合組織形成と力学機能異方性設計2021

    • Author(s)
      森田尚昂、石本卓也、中野貴由
    • Organizer
      日本金属学会2021年秋期講演(第169回)大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 長管骨におけるアパタイト配向化とオステオサイト形態異方性の相関性2020

    • Author(s)
      石本卓也、川原啓太、松垣あいら、上岡 寛、中野貴由
    • Organizer
      第40回日本骨形態計測学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] レーザ積層造形法による結晶集合組織制御のための熱拡散シミュレーション2020

    • Author(s)
      菅沼諒耶、石本卓也、高岸洋一、山上達也、中野貴由
    • Organizer
      日本金属学会2020年秋期講演(第167回)大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] レーザ積層造形法を用いた階層的構造制御による異方性機能設計2020

    • Author(s)
      森田尚昂、石本卓也、木村恒太、中野貴由
    • Organizer
      日本金属学会2020年秋期講演(第167回)大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] レーザ積層造形法による生体用ハイエントロピー合金の造形2020

    • Author(s)
      西川侑希、石本卓也、松垣あいら、小笹良輔、永瀬丈嗣、中野貴由
    • Organizer
      日本金属学会2020年秋期講演(第167回)大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属工学に根差した骨機能解明とそれに基づく骨生体材料創製に関する研究2020

    • Author(s)
      石本卓也
    • Organizer
      日本金属学会2020年春期講演大会
    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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