A total of 2341 postmenopausal women were recruited in five centers in Italy during 2006 and 2007 for quantitative ultrasound (QUS) measurement at the phalanges during a screening program for osteoporosis . Two ultrasound parameters were collected: amplitude-dependent speed of sound (AD-SoS) and ultrasound bone profile index (UBPI). Women were then re-contacted in 2010 ([i]n[/i] = 2211) and were asked about fracture occurrence during the period since previous QUS measurement. The mean age of the recruited women was 60.9 ± 10.0 years, the mean age at menopause was 49.3 ± 4.4 years, and the mean body mass index (BMI) was 26.5 ± 4.6 kg/m[+]2[/+]. A total number of 108 new major osteoporotic fractures occurred during the 3-year period, of which 23 were hip fractures and 51 were vertebral fractures. The relative risk (RR) per standard deviation (SD) decrease for major fractures was 1.77 (95% confidence interval (CI) 1.59–1.97) for AD-SoS and 2.06 (95% CI 1.78–2.37) for UBPI. When corrected for age, BMI, and age at menopause, the RRs were still significant and equal to 1.44 (95% CI 1.26–1.65) for AD-SoS and 1.67 (95% CI 1.39–2.00) for UBPI. The RR for vertebral fractures was 1.63 (95% CI 1.41–1.88) for AD-SoS and 1.73 (95% CI 1.44–2.08) for UBPI. The RR for hip fractures was 1.92 (95% CI 1.55–2.37) for AD-SoS and 2.68 (95% CI 1.86–3.86) for UBPI. Thus, this study showed that ultrasound parameters AD-SoS and UBPI were able to significantly predict future major fractures in a prospective cohort of more than 2000 postmenopausal women.
Department of Medicine T, Ichilov Hospital, Tel-Aviv, Israel
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