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Biomechanical analyzes of the strain bution in femora after total hip arthroplasty

Research Project

Project/Area Number 05671232
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionKeio university

Principal Investigator

SAKAMAKI Toyonori  Keio univ., Medical dept., vice-professor, 医学部, 講師 (00118952)

Co-Investigator(Kenkyū-buntansha) HONMA Takayuki  Keio univ., Medical dept., assistant, 医学部, 助手 (50199585)
SIMOMURA Satosi  Keio univ., Medical dept., assistant, 医学部, 助手 (50196565)
CHIBA Kazuhiro  Keio univ., Medical dept., assistant, 医学部, 助手 (10197618)
YANAGIMOTO Sigeru  Keio univ., Medical dept., assistant, 医学部, 助手 (60166551)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥800,000 (Direct Cost: ¥800,000)
Keywordscementless THA / strain gauge / biomechanical analysis / 人工股関節 / 生体力学 / 表面ひずみ
Research Abstract

The purpose of this paper is to investigate the better form of cementless-straight-tapered stems.
Composite femoral models those have 22 biaxial strain gauges on anterior, posterior, lateral and medial surfaces, a load cell and 3 experimental THA systems were used. Femoral models were reamed and rasped with the same manner as the actual operation and femoral stems were inserted by turns into it. we mounted the femoral model on the load cell, inserted each stem, put some force on the stems head and measured the surface strains of the femoral models. We recorded both axial strains and circumferential ones, and discussed about them.
1.To investigate the optimal stem length, we used 6 kinds of stems those have different length. The 6cm stem is too short to be stable. In case of Japanese, the 18cm straight-tapered stem is too long. The best length of KKS femoral stem (#6) is about 15cm.
2.To investigate the more important part of the stems, we used 3 kinds of stems those have different fitting portions ; distal fitting, proximal fitting and total fitting. The distal fitting stem is unstable. There are almost same strain-distributions in proximal fitting stem and distal fitting stem. So the proximal fitting is important.
3.To investigate the better proximal shape of the stems, we used 3 kinds of stems those have different shapes ; prominent lateral portion, flat lateral portion (standard stem) and round lateral portion. Both stems those have prominent lateral portion and round lateral portion are unstable. The standard stem is the best shape.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 本間 隆之 他: "大腿骨ステムの髄腔内占拠状態と大腿骨ひずみ分布の関係-大腿骨内外側面での検討-" 日本臨床バイオメカニクス学会誌. 16. 399-402 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 千葉 和宏 他: "人工股関節大腿ステムの形状の検討-ステムの長さについて-" 日本臨床バイオメカニクス学会誌. 16. 395-398 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 下村 哲史 他: "セメントレス人工股関節ステムの大腿骨応力分布(ステム近位部外側の形状との関連)" 人工関節学会誌. (投稿予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 本間 隆之 他: "大腿骨ステムの髄腔内占拠状態と大腿骨ひずみ分布の関係-大腿骨内外側面での検討-" 慶應医学. (投稿予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 千葉 和宏 他: "セメントレス人工股関節におけるステム長の検討" 慶應医学. (投稿予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 下村 哲史 他: "セメントレス人工股関節ステムの大腿骨応力分布(ステム近位部外側の形状との関連)" 慶應医学. (投稿予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Takayuki Honma: "The effect of fitting condition of the implants on strain distributions at the medial and lateral cortex of the femur." Proceedings of Annual Meeting of Japanese Society for Orthopaedic Biomechanics. 16. 399-402 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kazuhiro Chiba: "Evaluation of the shape of femoral stem in THA with special reference to stem length." Proceedings of Annual Meeting of Japanese Society for Orthopaedic Biomechanics. 16. 399-402 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 千葉和宏 他: "人工股関節大腿ステムの形状の検討-ステムの長さについて-" 日本臨床バイオメカニズム学会誌. 16. 395-398 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 本間隆之 他: "大腿骨ステムの髄腔内占拠状態と大腿骨ひずみ分布の関連" 日本臨床バイオメカニズム学会誌. 16. 399-402 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 本間隆之 他: "セメント非使用人工股関節の大腿骨応用分布" 日本整形外科学会雑誌. 69. 1355- (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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