Ultrasound and dual X-ray absorptiometry densitometry in women with hip fracture

Abstract

To assess the usefulness of the measurement of the os calcis by ultrasound, a method that probably reflects bone quality as well as density, we have studied 54 women with hip fracture of the proximal femur and a control group. Ultrasound evaluation of the os calcis [broadband ultrasound attenuation (BUA), speed of the sound (SOS), and a combined index ("stiffness")], and bone mineral density (BMD) determination over the proximal femur by dual X-ray absorptiometry (DXA) were performed. Weight, BMD, and ultrasound values in the hip fracture patients were significantly lower than controls (P < 0.001). The Z-scores for BUA and stiffness were not different than that for femoral neck, Ward's triangle or trochanteric BMD (between -1.7 and -1.5). The odds ratios determined by receiver-operating characteristics (ROC) analysis were greater at the femoral neck (25.1) and BUA (24.4). Intermediate values were found at stiffness (16.9), Ward's triangle (12.8), and trochanter (11.1), and lower values were obtained at SOS (4.2). In turn, patients with trochanteric hip fractures had a significantly lower femoral neck and Ward's triangle BMD, stiffness, and BUA than patients with cervical hip fractures. Comparing a subgroup of 30 women with hip fractures without vertebral fractures with an age-matched group of 87 women with osteoporotic vertebral fractures, both groups were of similar weight and BMD but all ultrasound values were significantly lower in the hip fractures compared with vertebral fracture patients (P < 0.05 - P < 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

Epidemiology of osteoporosis in South America

“…3 and Table 4 show that the BMD of the total skeleton was similar in the Buenos Aires study [7] and the USlEurope women. Similar values from the Buenos Aires and US population were also found for the ultrasound evaluation of the calcaneus [8].…”

“…The subject has been recently reviewed [3]. A short number of reports dealing with bone mass measurements [4][5][6][7][8][9][10][11][12] and thefrequency of osteoporotic fractures [13][14][15][16][17] in relatively limited areas and populations will be reviewed here. Tables 2-4 and Figs.…”

Ultrasound bone densitometry and dual energy X-ray absorptiometry in patients with spinal cord injury: a cross-sectional study

“…This is not stiffness in the true biomechanical sense that indicates the stressj strain relationship of a bone, but a derived index of bone defined by the manufacturer. 9 'Stiffness' is expressed as a percentage relative to the mean value for young normals and it derives approximately two thirds of its value from the mean of the BUA and one third from the mean of SOS measurements. BUA, SOS and 'stiffness' have been found to correlate with the bone mineral density measurements and to give a clinical index of fracture risk in otherwise healthy populations.…”

Prevalência do risco para fraturas estimado pela ultra-sonometria óssea de calcâneo em uma população de mulheres brasileiras na pós-menopausa

“…Mautalen et al 27 , em um estudo com mulheres argentinas, observaram quase o dobro de redução (28%, 13% e 4%, respectivamente), enquanto Kim et al 17 quantificaram esta redução em 24,7%, 15,2% e 2,1%, valores mais próxi-mos dos encontrados por nós. Na França 28 , na Itália 29 e no Japão 30 os estudos demonstraram variações na ordem de 24 a 32% para Stiffness Index, 9 a 17% para atenuação do som, e 3 a 5% para velocidade do som.…”