A Portable Ultrasonic Bone Densitometer For The Measurement Of Multiple Sites

3300 healthy habitants of Ural region were examined with dichromatic bone densitometer «GE/Lunar» (USA). Then they were divided according to somatic type: 1100 normosthenic, 1100 hypersthenic and 1100 asthenic persons. There were formed age groups in female from 16, in male adolescents from 18 to 20 years old with 1-year pace, over 20 up to 80 years old with 5-years pace. It was evaluated how somatic type affects the mineral density of a skeleton, the mass of muscular, connective and adipose tissues. The mineral density in hypersthenic female adolescents was formed at the age of 16, in male - at the age of 18. In normosthenic and asthenic persons of the same age the mineral density was 95% and 92%. In hypersthenic women 80 years of age the mineral density was reduced by 30% from peak bone mass, in normosthenic - by 36% and in asthenic - by 41%. In men these values were 11,17 and 20% pro tanto.

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Quantitative ultrasound assessment of the effect of parity on bone mineral density in females

BMC Women s Health ◽

10.1186/s12905-021-01516-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Shahnaz Akil ◽

Huda Al-Mohammed ◽

Norah Al-Batati ◽

Maissa Tirsen ◽

Ahad Al-Otaibi ◽

...

Keyword(s):

Bone Mineral Density ◽

Bone Mineral ◽

Quantitative Ultrasound ◽

Screening Method ◽

Broadband Ultrasound Attenuation ◽

Control Group ◽

Mineral Density ◽

Portable Ultrasound ◽

Bone Densitometer ◽

Significant Difference

Abstract Background The effect of pregnancy and breastfeeding on a female’s bone mineral density (BMD) is controversial. This prospective study aims to investigate the effect of parity on BMD among pre-menopausal multiparous females using quantitative ultrasound as a screening method and females with no pregnancies (nulliparous) as a control group. Methods A portable ultrasound-based bone densitometer (DMS PEGASUS SMART, Mauguio, France) was used to indirectly assess the BMD in 51 multiparous (29–45 years) and 51 nulliparous Arabic females (18–35 years) by quantifying the broadband ultrasound attenuation (BUA) from their right calcaneus bone. BUA > 70 db/mhz = normal, BUA 65–69.9 db/mhz = below average, BUA 55–64.9 db/mhz = osteopenia and BUA < 55 db/mhz = osteoporosis. Results There was a significant difference in mean BUA between multiparous and nulliparous females (74.1 db/mhz vs. 69.3 db/mhz, p = 0.006). The prevalence of normal BMD was significantly higher in the nulliparous group than in the multiparous group (70.6% vs. 47.1%, p = 0.02). Osteoporosis was found in the multiparous group only (3/51). Among the multiparous females who breastfed (43/51), a total of 51.2% (22/43) had normal BMD, 25.6% (11/43) had BMD below average, 18.6% (8/43) had osteopenia and 4.7% (2/43) had osteoporosis. No significant differences in mean BUA (p = 0.2) were found between the group of females who breastfed for one year (13/43; BUA: 70.5 ± 9.4), the group of females who breastfed for 6–11 months (8/43; BUA: 70.6 ± 10.0) and those who breastfed for less than six months (22/43; BUA: 71.6 ± 9.4). A binary logistic regression model built for predicting BMD normality showed significance for the variable parity (p = 0.03), while the effect of the possible confounding variables BMI and age on BMD normality was found to be non- significant (p = 0.1 and p = 0.6, respectively). Conclusion Parity affects the BMD, as assessed by a portable ultrasound-based bone densitometer, of young and middle-aged females as compared to the BMD of nulliparous females.

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