alexa Quantitative Ultrasound Measurements at the Calcaneus in a Population of Urban Senegalese Women: Least Significant Difference and T-Score
ISSN: 2161-1149

Rheumatology: Current Research
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Research Article

Quantitative Ultrasound Measurements at the Calcaneus in a Population of Urban Senegalese Women: Least Significant Difference and T-Score

Souhaïbou Ndongo1*, Bruno Sutter2, Ousseynou Ka1, Gnagna Diouf1, Mayacine Diongue3, Fernando Kemta Lekpa1, Abdoulaye Pouye1, Mamadou Mourtalla Ka1 and Thérèse Moreira Diop1

1Clinique médicale I - H.A.L.D – Dakar, BP 6034 Dakar étoile, Senegal

2Unité de médecine nucléaire, Institut CALOT – Groupe HOPALE, 62608 Berck/Mer Cedex, France

3Unité de médecine nucléaire, Institut CALOT – Groupe HOPALE, 62608 Berck/Mer Cedex, France

*Corresponding Author:
Dr. Prof. Souhaibou Ndongo
Rhumatologue - Interniste
C.HU Le Dantec BP 6034 -Dakar Star - Sénégal
Tel: (00221) 338 212 770
Fax: (00221) 33822 38 68
E-mail: [email protected]

Received date: December 07, 2011; Accepted date: March 21, 2012; Published date: March 23, 2012

Citation: Ndongo S, Sutter B, Ka O, Diouf G, Diongue M, et al. (2012) Quantitative Ultrasound Measurements at the Calcaneus in a Population of Urban Senegalese Women: Least Significant Difference and T-Score. Rheumatology 2:107. doi: 10.4172/2161-1149.1000107

Copyright: © 2012 Ndongo S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background: Bone ultrasound measurements can be used to evaluate osteoporosis in clinical practice. As with DXA, ultrasonography shows marked variations across racial groups. In the USA, quantitative ultrasound measures were higher in African-American women than in Caucasian women. Few data are available on these measures in African women, and there are no normative data for Senegalese women. Our objectives were to evaluate the least significant difference (LSD) and to establish reference values of quantitative ultrasound measures at the calcaneus in Senegalese women.

Methods: Reference values were obtained in 50 healthy women aged 25-35 years. A UBIS 5000 ultrasound sonometer was used to determine speed of sound (SOS), broadband ultrasound attenuation (BUA), and the Strength Index (STI) at both heels.

Results: In the 50 healthy controls (mean age, 29.8 ± 3.7 years, mean height, 167.3 ± 5.8 cm, mean weight 68.1 ± 13.2 kg; 38 right-handed), BUA (mean of the two sides) was 72.24 ± 6.83 dB/MHz. BUA values were higher in women with regular sporting activities (n=10) and in those with higher body weight values, indicating an increase in bone mass associated with greater loads through the calcaneus.

Conclusion: Quantitative ultrasound parameters measured at the calcaneus using a UBIS 5000 sonometer in Senegalese women showed similar reproducibility to that reported previously in Caucasian women examined using the same sonometer or a comparable sonometer. The mean BUA values in our reference population can be used to compute T-scores in individual female patients in Senegal. Our data support a link between greater mechanical loads and higher bone mass.

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