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  • Title: Bone mineral density in healthy Tunisian women.
    Author: Sahli H, Testouri N, Chihaoui MB, Salah AH, Cheour E, Meddeb N, Zouari B, Sellami S.
    Journal: Maturitas; 2009 Jul 20; 63(3):227-32. PubMed ID: 19398172.
    Abstract:
    Interpretation of densitometric results requires a comparison with reference bone mineral density (BMD) values of normal age and sex-matched persons. Thus the aim of this study was to determine these values for healthy Tunisian women, to estimate the prevalence of osteoporosis and to compare our findings with other populations. A cross-sectional study of 1378 Tunisian women aged between 20 and 96 years was carried out using DXA (GE-Lunar Prodigy). Subjects with suspected conditions affecting bone metabolism were excluded. Measurements were taken at the lumbar spine and femoral neck. These values were expressed at T-scores, with reference to the mean BMD values of the group aged 20-40 years. The peak bone mass, estimated in this age group was 1.174+0.127 g/cm(2) at the lumbar spine and 1.016+/-0.118 g/cm(2) at the femoral site. It was attained respectively within the age of 25 years and 36 years. For both sites, the expected decline in BMD was shown when the successive age groups [40-49 years] and [50-59 years] were compared. Bone loss was rapid during the first 5 years after menopause. Thereafter BMD declined slowly but continually. The prevalence of osteoporosis in the women over 50 years of age, taking account of peak bone mass observed in our cohort, was 23.3% at the spine and 17.3% at the femoral neck with a combined prevalence of 23.4%. These rates attained respectively 30.4%, 11.8% and 32.9% when we considered the Italian values, which demonstrate the variability of osteodensitometric depending to the reference population adopted.
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