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MECHANICAL EVALUATION OF FRACTURE HEALING USING THE IMPULSE RESPONSE METHOD IN A FRACTURE MODEL OF DOG

Research Project

Project/Area Number 07671578
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthopaedic surgery
Research InstitutionSHINSHU UNIVERSITY

Principal Investigator

NAKATSUCHI Yukio  SHINSHU UNIVERSITY,SCHOOL OF MEDICINE,ASSOCIATE PROFESSOR, 医学部, 助教授 (80115360)

Co-Investigator(Kenkyū-buntansha) NOMURA Akio  SHINSHU UNIVERSITY,FACULTY OF ENGINEERING,DEPARTMENT OF INFORMATION ENGINEERING,, 工学部・情報工学科, 教授 (00115362)
SAITOH Satoru  SHINSHU UNIVERSITY,SCHOOL OF MEDICINE,SHINSHU UNIVERSITY HOSPITAL,LECTURER, 医学部・附属病院, 講師 (20175350)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1995: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsfracture healing / fracture of dog / tibia / impulse response method / mechanical strength
Research Abstract

The strength of the fracture healing in a long bone can be mechanically evaluated with the resonant frequency which is measured by the impulse response method (IRM). Tenadult beagle doge were used to make fracture models in their tibias. The tibia was opened in its mid-shaft under an intravenous anesthesia, transversely incised by a bone saw and fixated with a SMO plate and four screws with a gap from zero to 2mm. There were two primary vibrational modes in the dog tibia, on its asgital and frontal planes. The resonant frequency on the frontal plane was used for monitoring the fracture healing process and the normal value of resonant frequency of the sound tibia ranged from 800 to 1100 Hz. The resonant frequency, x-ray examination, DXA,hematology and biochemical examination of the blood were routinely performed once a week until 8 (5 dogs) or 18 (5 dogs) weeks postopertively when the dogs were sacrificed.
The change of resonant frequency was compared with the roentgenogram in the fracture healing process. The resonant frequency did not reach the value of sound side at 8 weeks postoperatively but did at 18 weeks in all dogs. The grester the gap was, the more the decrease of postoperative resonant frequency was. The resonant frequency at the first week after operation was the lowest in all dogs. An acute increase of the frequency was found one two weeks prior to that the gap was filled up with callus. Blood calcium increased at one week postoperatively and returned to normal value at 3 weeks. Blood alkaline phosphatase showed a peak at the first week and then declined. Bone mineral density of the fracture segment revealed an acute increase until 8 weeks postoperatively. Histological fracture healing was incomplete at 8 weeks but was complete at 18 weeks postoperativery. That histological findings was coincident with the change of resonant frequency.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Nakatsuchi Y: "Assessment of fracture healing in the tibia using the impulse response method" J. Orthop. Trauma. 10. 50-62 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y: "The vibrational mode of the tibia and assessment of bone union in experimental fracture healing using the impulse response method" Med Eng Phys. 18. 575-583 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tsuchikane A: "The influence of joints and soft tissue on the natural frequency of the human tibia using the inpulse response method" Proc Instn Mech Engrs. 209. 149-155 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中土幸男: "インパルス衝撃応答法による〓骨骨癒合評価" 日本臨床バイオメカニクス学会誌. 17. 471-475 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中土幸男: "踵骨の超音波伝播のパラメータの年齢的変化と骨粗鬆症の踵骨,腰椎、および大腿骨頚部骨塩との相関" 日本臨床バイオメカニクス学会誌. 18(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 中土幸男: "イヌ骨折モデルにおけるインパルス衝撃応答法による骨折治癒過程の力学的評価" 日本臨床バイオメカニクス学会誌. 18(印刷中). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y,Tsuchikane A., Nomura A.: "Assessment of fracture healing in the ribia using the impulse response method." J Orthop Trauma. 10. 50-62 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y, Tsuchikane A, Nomura A: "The vibrational mode of the tibia and assessment of bone union in experimental fracture healing using the impulse response method." Med Eng Phys. 18. 575-583 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tsuchikane A,Nakatsuchi Y,Nomura A: "The influence of joints and soft tissue on the natural frequency of the human tibia using the impulse response method." Proc Instn Mech Engrs. 209. 149-155 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y,Tsuchikane A,Nomura A,Yashida I: "Assessment of fracture healing the tibia using the impulse response method." J Jpn Soci Orthop Biomech. 17. 471-475 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y,Tsuchikane A,Nomura A,Yoshida I,Saitoh K,katagiri K: "Mechanical evaluation of fracture healing by impulse response method in fracture model of dog." J Jpn Soci Orthop Biomech. 18 : (in print). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y,Tsuchikane A,Nomura A,Yoshida I: "Changes of ultrasonic parameters of the calcaneus with age and correlations between the parameters and BMD_s of the calcaneus, the lumber spine and the femoral neck in osteoporosis." J Jpn Soci Orthop Biomech. 18 : (in print). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakatsuchi Y: "Assessment of fracture healing in the tibia using the impulse response method" J.Orthop.Trauma. 10. 50-62 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Nakatsuchi Y: "The vibrational mode of the tibia and assessment of bone union in experimental fracture healing using the inpulse response method" Med Eng Phys. 18. 575-583 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Tsuchikane A: "The influence of joints and soft tissue on the natural frequency of the human tibia using the inpulse response method" Proc Instn Mech Engrs. 209. 149-155 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中土幸男: "インパルス衝撃応答法による脛骨骨癒合評価" 日本臨床バイオメカニクス学会誌. 17. 471-475 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中土幸男: "踵骨の超音波伝播パラメータの年齢的変化と骨粗鬆症の踵骨,腰椎、および大腿骨頚部骨塩との相関" 日本臨床バイオメカニクス学会誌. 18(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中土幸男: "イヌ骨折モデルにおけるインパルス衝撃応答法による骨折治癒過程の力学的評価" 日本臨床バイオメカニクス学会誌. 18(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] TsuchikaneA,et al.: "The influence of joints and soft tissue on the natural frequency of the human tibia using the impulse response method" Pvoc Instn Mech Engrs. 209. 149-155 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 野村 彰夫,他: "骨強度の定量的評価に関する考察" 日本臨床バイオメカニクス. 16. 65-69 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Nakatsuchi,et al: "Assessmsnt of fracture healing in the tibia using the impulse response method" J.Orthop.Trauma. 10. 50-62 (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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