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Investigation of classifying conditions of knee osteoarthritis using frequency analysis at the knee joint based on vibroarthrograpy

Research Project

Project/Area Number 19K22783
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 58:Society medicine, nursing, and related fields
Research InstitutionSeijoh University

Principal Investigator

Ota Susumu  星城大学, リハビリテーション学部, 教授 (50452199)

Co-Investigator(Kenkyū-buntansha) 坂井 建宣  埼玉大学, 理工学研究科, 教授 (10516222)
長谷 和徳  東京都立大学, システムデザイン研究科, 教授 (10357775)
Project Period (FY) 2019-06-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords変形性膝関節症 / 関節音 / 振動 / 早期発見 / 高速フーリエ変換 / 機械学習 / スクワット / トータルパワー / 振動解析 / 加速度計 / 立ち上がり / 早期変形性膝関節症 / 加振器 / 周波数解析 / 判別分析
Outline of Research at the Start

変形性膝関節症は中高齢者の主な膝関節痛の原因であり,運動機能低下を引き起こす.しかし,変形性膝関節症は,既に骨の変形が進んでいても症状が出現しないことも多く,気づかないうちに進行する.そこで本研究の目的は,立ち上がりなどの膝関節動作時に膝から生じる振動(関節音)を小さな加速度計を用いて計測し,簡便にかつ非侵襲的(痛みがなく,被爆しないなど)に,変形性膝関節症を見つけ出す方法を確立することである.すでに,今までの研究で,中高齢者の方を対象に行いやすく信頼性のある方法の準備を進めてきた.今回の研究で,実用的なレベルまでの方法の確立を目指す.

Outline of Final Research Achievements

Knee osteoarthritis (knee OA) often causes no symptoms even in cases of bony deformity of the knee joint, and it is important to establish a simple screening method for knee OA in order to prevent it. We focused on the sound generated by the knee and developed and applied a method to identify knee OA based on the difference between low and high knee load. As a result, we believe that our new method can discriminate between knee OA and healthy knees. Although further application of this method is still in the future, we were able to establish the methodology and conduct a preliminary study.

Academic Significance and Societal Importance of the Research Achievements

要支援の主な原因と考えられている変形性膝関節症(膝OA)は,中高齢者の罹患率が高く,レントゲン撮影により診断される.しかし,約3分の2は骨の変形があっても症状が出現しない.高齢者の介護予防のためにも,症状が出現していなくても早期に膝OAを簡単にスクリーニングする方法を確立し,予防をすることが重要である.我々は膝OAの初期に生じる関節からの音を新しい視点(音を出さずに動かすことができれば正常に近い)から解析方法を新たに構築した.本法は,簡便であるため実用化しやすく,今後は人間ドックのオプションや運動療法の治療判定などにも応用ができ,膝OAの予防,強いては介護予防へと結びつけることが可能である.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020 2019

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] A novel attempt for diagnosing Outerbridge classification of articular cartilage damage via vibration transmission2022

    • Author(s)
      Gong R, Hase K, Wang S, Ota S.
    • Journal Title

      Journal of Biomechanical Science and Engineering

      Volume: 17 Issue: 3 Pages: 21-00319-21-00319

    • DOI

      10.1299/jbse.21-00319

    • NAID

      130008163118

    • ISSN
      1880-9863
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adaptive Vibrarthographic Signal Denoising via Ant Colony Optimization Using Dynamic Denoising Filter Parameters2021

    • Author(s)
      Rui Gong, Kazunori Hase, Hajime Ohtsu, Susumu Ota
    • Journal Title

      International Journal of Engineering and Technology Innovation

      Volume: 12 Issue: 1 Pages: 01-15

    • DOI

      10.46604/ijeti.2021.8718

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vibroarthrographic signals for the low-cost and computationally efficient classification of aging and healthy knees2021

    • Author(s)
      Rui Gong, Hajime Ohtsu, Kazunori Hase, Susumu Ota
    • Journal Title

      Biomedical Signal Processing and Control

      Volume: 70 Pages: 103003-103003

    • DOI

      10.1016/j.bspc.2021.103003

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Knee osteoarthritis detection based on the combination of empirical mode decomposition and wavelet analysis2020

    • Author(s)
      Gong R, Hase K, Goto H, Yoshioka K, Ota S.
    • Journal Title

      Journal of Biomechanical Science and Engineering

      Volume: 15 Issue: 3 Pages: 20-00017-20-00017

    • DOI

      10.1299/jbse.20-00017

    • NAID

      130007879755

    • ISSN
      1880-9863
    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 初期変形性膝関節症を模擬したブタ軟骨の変性が粘弾性特性に及ぼす影響2019

    • Author(s)
      赤羽 航平, 太田 進, 蔭山 健介, 坂井 建宣
    • Organizer
      日本実験力
    • Related Report
      2019 Research-status Report
  • [Presentation] Classification of Knee-Joint Vibroarthrographic Signals via Continuous Wavelet Transform and Kernel Support Vector Machine.2019

    • Author(s)
      Gong R, Hase K, Goto H, Ota S
    • Organizer
      AP Biomech
    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2024-01-30  

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