1999 Fiscal Year Final Research Report Summary
DEVELOPMENT OF DIAGNOSTIC EQUIPMENT FOR PREDICTION OF FEMORAL NECK FRACTURE USING VIBRATIONAL RESPONSE ANALYSIS
| Project/Area Number |
10557132
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Orthopaedic surgery
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| Research Institution | SHINSHU UNIVERSITY |
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Principal Investigator |
SAITOH Satoru SHINSHU UNIVERSITY HOSPITAL, SCHOOL OF MEDICINE, DEPARTMENT OF ORTHOPAEDIC SURGERY, LECTURER, 医学部・附属病院, 講師 (20175350)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMADA Takahisa INDUSTRIAL RESEARCH INSTITUTE OF NAGANO, DEPARTMENT OF SCIENCE OF PRODUCT, HEAD, 部長
NOMURA Akio SHINSHU UNIVERSITY, FACULTY OF ENGINEERING, DEPARTMENT OF INFORMATION ENGINEERING, PROFESSOR, 工学部, 教授 (00115362)
HATA Yukihiko SHINSHU UNIVERSITY HOSPITAL, SCHOOL OF MEDICINE, ASSISTANT, 医学部・附属病院, 助手 (50293527)
MORIIZUMI Tetsuji SHINSHU UNIVERSITY, SCHOOL OF MEDICINE, DEPARTMENT OF ANATOMY, PROFESSOR, 医学部, 教授 (70157874)
KOBAYASHI Michiaki KITAMI INSTITUTE OF TECHNOLOGY, DEPARTMENT OF MACHINARY SYSTEM ENGINEERING, PROFESSOR, 教授 (20105539)
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| Project Period (FY) |
1998 – 1999
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| Keywords | FEMORAL NECK / FRACTURE / VIBRATIONAL RESPONSE ANALYSIS / PREDICTION OF FRACTURE / DIAGNOSTIC EQUIPMENT |
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| Research Abstract |
Three primary vibrational modes were found in the human femur, of which the mode with the highest frequency is a torsional vibration. The torsional vibration could be detected most sensitively with. higher amplitude when an accelerometer is placed either at the proximal or distal end of the femur. The mechanical strength of the femoral neck is found to be correlative to the torsional vibrational frequency. A finite element method analysis of the femur revealed that a compressive stress concentration existed in the antro-inferior area of the femoral neck and a tensile stress concentration did in the postero-superior area. A diagnostic equipment for prediction of femoral neck fracture using vibrational response analysis was manufactured based upon the above findings.
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