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Dynamic and Static Analysis of Rotator CUFF (Supraspinatus Tendon) with Tensile Test

Research Project

Project/Area Number 02670668
Research Category

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

Allocation TypeSingle-year Grants
Research Field Orthopaedic surgery
Research InstitutionTokai University School of Medicine

Principal Investigator

FUKUDA Hiroaki  tokai University, School of Medicine, Department of Orthopaedic Surgery, Professor, 医学部, 教授 (40051388)

Co-Investigator(Kenkyū-buntansha) NAKAJIMA Tomotaka  Tokai University, School of Medicine, Department of Orthopaedic Surgery, Assista, 医学部, 助手 (90227794)
HAMADA Kazutoshi  Tokai University, School of Medicine, Department of Orthopaedic Surgery, Assista, 医学部, 講師 (70156397)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1991: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsSupraspinatus tendon / Rotator cuff / Rotator cuff tear / Tensile test / Histology / Biomechanical property / 肩関節 / 張力試験 / バイオメカニクス / 腱板不全断裂
Research Abstract

Objective : The bursal-side (B-S) and the joint-side (J-S) layers of the supraspinatus tendon may be torn in the different mechanism. In this study, we attempted to clarify the difference of the histological characteristic and the biomechanical property between both layers with reference to the etiology of the rotator cuff tear.
Materials and Methods : 50 supraspinatus tendons were resected from bilateral shoulders of fresh cadavers (28-79 yrs.). Histological sections from 10 supraspinatus tendons were made in the coronal and four cross planes at the musculotendinous junction, proximal and distal points of the critical portion and the insertion. In the biomechanical study, 40 supraspinatus tendons were divided horizontally into the B-S and J-S layers of equal thickness. Quasistatic tensile test was performed foe each layer and the elongation rates in the musculotendinous, tendinous and insertional portions were measured.
Results : The tendon fibers of the supraspinatus were thicker in the B-S layer than in the J-S layer. The fibers in the J-S layer tapered toward the insertion. In the tensile test, the destroying stress to the B-S layer was greater than that to the J-S layer while the elastic modulus was lower in the former. The tendinous portion had the largest elongation rate in the B-S layer, while the J-S layer elongated evenly. 'Gross rupture' occurred in the proximal portion of the tendon in the B-S layer and near the insertion in the J-S layer. 'Concealed rupture' occurred near the insertion and reflected the degenerative changes of the enthesis.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 中島 知隆: "腱板断裂に対する材料力学的要因" 日整会誌. 65. 1351 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 中島 知隆: "腱板断裂に対する棘上筋腱の材料学的および病理組織学的特性の影響" 肩関筋. 16. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nakajima, tomotaka et al.: "Effect of histological characteristic and biomechanical property of supraspinatus tendon on rotator cuff tear." Katakansetsu. 16(1). (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Nakajima, tomotaka et al.: "Biomechanical effect on the rotator cuff tear" Journal of Japanese Orthopaedic Association. 65(7). 1351 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 中島 知隆: "腱板断裂に対する材料力学的要因" 日整会誌. 65. 1351 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 中島 知隆: "腱板断裂に対する棘上筋腱の材料学的および病理組織学的特性の影響" 肩関節. 16. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 中島 知隆: "張力試験による腱板の動・静態学的解析" 肩関筋. 16. (1992)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中島 知隆: "腱板断裂に対する力学的要因 ー材料学的検討" 日本整形外科学会雑誌. 66. (1992)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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