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Metacarpal bone mass in normal and osteoporotic Japanese women using computed X-ray densitometry.

Abstract：

:The metacarpal bone mineral density (BMD) and metacarpal index (MCI) of the second metacarpal bone were measured by computed X-ray densitometry (CXD) (Teijin Ltd., Tokyo), which we have established with the development of microdensitometry of radiographs. In this study, we evaluated the basic attributes of this CXD method and determined the age-related changes in both metacarpal measurements in normal Japanese women. The precision in vivo was measured in eight subjects. The precision errors [coefficient of variation (CV)] were 0.2-1.2% CV for metacarpal BMD and 0.4-2.0% CV for MCI, respectively. We have obtained low precision error and more rapid analysis, within 3 minutes respectively, compared with the previous methods. Age-related changes in the metacarpal measurements were evaluated in 1438 normal women. Both measurements showed the most significant decrease in the sixth decade of life. The rate of decrease in the sixth decade was 1.6%/year for metacarpal BMD and 1.5%/year for MCI. On comparison between metacarpal BMD by CXD and spine BMD using dual energy X-ray absorptiometry (DXA) in 248 normal women with and without menstruation, the two measurements were found to be similarly decreased in the subjects within 5 years after menopause. There was also no significant difference in the Z-score between metacarpal BMD and spine BMD within 5 years after menopause. These results indicate that early postmenopausal bone loss occurs not only in the spine but also in the metacarpal bone.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

Calcif Tissue Int

journal_title

Calcified tissue international

authors

Matsumoto C,Kushida K,Yamazaki K,Imose K,Inoue T

doi

10.1007/BF00299308

subject

Has Abstract

pub_date

1994-11-01 00:00:00

pages

324-9

issue

5

eissn

0171-967X

issn

1432-0827

journal_volume

55

pub_type

杂志文章

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