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2002 Fiscal Year Final Research Report Summary

Research on X-ray measurements of Remodeling Stress in Living Bone Tissue

Research Project

Project/Area Number 12480254
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Biomedical engineering/Biological material science
Research InstitutionHOKKAIDO UVIERSITY

Principal Investigator

TADANO Shigeru  Hokkaido University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (50175444)

Co-Investigator(Kenkyū-buntansha) SASAKI Naoki  Hokkaido University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (40142202)
Project Period (FY) 2000 – 2002
KeywordsBiomechanics / Bone Structure / Remodeling / Cortical Bone / X-ray Diffraction / Residual Stress
Research Abstract

Bone tissue is a composite material composed of hydroxyapatite (Hap) and collagen. Because Hap in bone tissue makes a crystal structure, an X-ray diffraction method is available to measure the strain of Hap. This study presents an X-ray diffraction method of measuring the residual stress/strain in bone tissue of rabbit's tibia . Bone powder of the diameter less than 40 micrometer was used as a control specimen at non-stressed state. From the measurements, it was clear that the distribution of residual stress existed in the bone tissue. The tensile residual stress at bone axial direction occurred in the proximal-medial region of rabbit's tibia. The compressive stress occurred in the other regions. In addition, the mechanism to generate the residual stress was investigated by sequential cutting of the tibia specimen from bone structure scale to bone tissue scale. The remodeling is a phenomenon that bone tissue and structure adapts functionally to mechanical environment. The residual stre … More ss will become a mechanical trigger to induce the remodeling.
In the X-ray diffraction method using characteristic X-rays with a unique wavelength, Hap in compact bone has much lower crystallization than metal as steel. The peak position of diffracted intensity is not easy to determine form the gradual intensity-angle profile. This work proposes a method to calculate the lattice strain from the information of a whole diffraction profile without a peak position. In this experiment, strip specimens of 28x8x2 mm in size with their long axis aligned to the bone axial or the circumferential direction were cut from cortical bone in a shaft of bovine femur. To confirm the relationship between applied macroscopic strain and lattice strain in bone tissue, a four-point bending device was developed to apply bending load to the specimen during the X-ray irradiation. Macroscopic strain of the specimen was measured by a strain-gauge bonded to opposite side of the surface irradiated by X-rays. As a result, the accuracy of measurement by this method was better improved. Less

  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 但野 茂: "X線回折法による生体骨組織内HApの結晶ひずみ測定"日本機械学会論文集A編. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 柴野 純一: "HApプラズマ溶射インプラントのX線侵入深さを利用した残留応力深さ分布測定"非破壊検査. 51. 413-419 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Fujisaki: "Lattice Strain of HAp Crystals in Bone Tissue Using X-ray Diffraction Method"Proc.International Congress on Biological and Medical Engineering. CD-ROM. (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.Tadano: "Residual Stress Measurements in Bone Tissue Using X-ray Diffraction"ASME International, Proc.ESDA2002. CD-ROM. BIO-001 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Shibano: "The Validity of Energy Dispersive Method for Measurements of Residual Stress Distribution along Depth"JSMS Material Science Research International. Special Issue. 344-347 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Todoh: "Polychromatic X-ray Measurements of Anisotropic Residual Stress in Bovine Femoral Bone"JSME International Journal, Series C. 43. 795-801 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. Tadano, K. Fujisaki, J. Shibano: "Lattice Strain Measurements of Hap Crystals in Bone Tissue Using X-ray Diffraction Method"Trans. Of JSME, Series A. (in press). (Japanese)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Shibano, S. Tadano, T. Ukai: "Measurement of Residual Stress along the Depth in Hap Plasma-sprayed Implant using X-ray Penetration Depth"Non-destractive Inspection. 51-7. 413-419(Japanese) (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Fujisaki, S. Tadano, J. Shibano: "Lattice Strain Measurements of Hap Crystals in Bovine Cortical Bone"Proceedings of International Congress on Biological and Medical Engineering. CD-ROM. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Shibano, S. Tadano: "Residual Stress in HAP Coated Titanium Implant by X-ray Diffraction Method"Proceedings of International Congress on Biological and Medical Engineering. CD-ROM. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tadano, J. Shibano, T. Okoshi, K. Fujisaki: "Residual Stress Measurements in Bone Tissue Using X-ray Diffraction"ASME International, Proceeding of ESDA 2002, 6th Biennial Conference on Engineering Systems Design and Analysis,BIO001. CD-ROM. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Shibano, S. Tadano, T. Ukai: "The Validity of Energy Dispersive Method for Measurement of Residual Stress Distribution along Depth"JSMS Materials Science Research International. Special Technical Publication-1. 344-347 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Todoh, S. Tadano, J. Shibano, T. Ukai: "Polychromatic X-ray Measurements of Anisotropic Residual Stress in Bovine Femoral Bone"JSME International Journal, Series C. 43-4, Special Issue on Bioengineering. 795-801 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S. Tadano, T. Okoshi, J. Shibano, T. Ukai: "Residual Stress Induced from Bone Structure and Tissue in Rabbit's Tibia"Proceedings of 10th International Conference on Biomedical Engineering. 529-530 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Shibano, S. Tadano, T. Ukai: "Effect of Bond Coat on Residual Stress Generated in Hydroxyapatite Coating Implant"Proceedings of The Sixth International Conference on Residual Stresses ICRS-6. 1. 693-700 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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