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Study of the etiology of spinal and hip fractures due to osteoporesis

Research Project

Project/Area Number 09670966
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionKAWASAKI MEDICAL SCHOOL

Principal Investigator

FUKUNAGA Masao  Nuclear Medicine, Kawasaki Medical School, Professor, 医学部, 教授 (00093302)

Co-Investigator(Kenkyū-buntansha) OTSUKA Nobuaki  Nuclear Medicine, Kawasaki Medical School, Assistant Professor, 医学部, 講師 (20140519)
SONE Teruki  Nuclear Medicine, Kawasaki Medical School, Associate Professor, 医学部, 助教授 (90179383)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1999: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥2,000,000 (Direct Cost: ¥2,000,000)
Keywordsosteoporosis / spinal fracture / hip fracture / bone mass measurement / bone marker / bone architecture / 脊髄骨折 / 大腿骨頚部骨折
Research Abstract

To clarify the etiology of spinal and hip fractures complicated with osteoporosis, the bone mineral density (BMD) and bone geometry or bone metabolic state were studied.
The BMDs were measured with dual-energy X-ray absorptiometry (DXA) equipment ; the DCS-600 for midradius, and the QDR-2000 for the second to fourth lumbar vertebrae, and proximal femur. As bone markers, The levels of pyridinoline (Pyr), deoxypyridinoline (D-Pyr), and NTx were measured. This study was conducted on women. Spinal fracture was judged by employing the diagnostic criteria for primary osteoporosis, after morphometry of anterior, central, and posterior vertebral height on lateral X-ray films of the thoracic and lumbar spines. For the geometry of the proximal femur, femur axis length (FAL) and neck width were measured.
With respect to spinal fracture ; (1) The radial, lumbar, and femoral BMDs in the fractured cases (N=41) were significantly lower (p<0.0001-0.0062) than those in the non-fractured cases (N=118-125) … More . (2) Pyr levels in the fractured cases tended to be higher. (3) The fractured cases showed a significantly (p=0.0092-0.0188) higher incidence of not only increased levels of both Pyr and D-Pyr (more than 33.2 pmol/mmol/Cr and 6.4 pmol/mmol/Cr, respectively), but also decreased BMD levels, less than 70% of the young adult mean, in both the radius and lumbar vertebrae, compared with the non-fractured cases.
With respect to hip fracture ; (1) Femoral neck BMDs were significantly lower(p<0.0001) in the fractured cases (N=76). (2) The increased odds ratio of hip fracture, which is calculated from logistic regression analysis, ageadjusted, was 3.40 (p<0.0001) for a decrease in the ISD of femoral neck BMD, and 1.48 (p=0.0320) for a decrease of 10kg of body weight. (3) The threshold value of femoral neck BMD of hip fractures was 0.516 g/cmィイD12ィエD1, and (4) from a study of fractured cases (N37) and non-fractured cases (N=161) of more than 70 years old, a significantly longer neck width was noted in the fractured cases than in the non-fractured cases, while there were no differences in FAL between the two groups.
Thus, it was suspected that spinal fracture is related to both a low BMD and the increased bone turnover, but hip fracture is related to geometry, as well as a low BMD. Less

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 福永仁夫: "骨代謝マーカー"産科と婦人科. 66. 1754-1761 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masao Fukunaga: "The present state and future prospects for bone mass measuremet. In Mechanical Loading of Bones and Joints"Springer-Verlag, Tokyo. 11 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masao Fukunaga, et al: "The present state and future prospects for bone mass measurement. In Mechanical Loading of Bone and Joints, ed. By Tkahashi HE"Springer-Verlag, Tokyo. 13-23 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Masao Fukunaga: ""The present state and future prospects for bone mass measurement" Mechanical Loading of Bones and Joints"Springer-Verlag,Tokyo. 11 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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