Vertebral collapse is a frequent complication of osteoporosis with usually severe sequels. We examined a group of female patients with known senile osteoporosis to try to define a subgroup with atraumatic vertebral collapse on the basis of broadband ultrasound attenuation (BUA) values in the heel. 186 patients were submitted to calcaneal ultrasound densitometry and to radiography of the dorsolumbar spine; we also investigated the body mass index and postmenopausal and menopausal ages to identify the variable with the highest correlation with fracture, with the multiple regression statistical analysis. The regression model analysis showed a statistically significant correlation of BUA values (inverse relation) and weight (direct relation) with the risk of collapse (0.967 and 1.075 odds ratio, respectively). We subdivided the patients according to their body mass index and made the receiver operating characteristics (ROC) curves, thus increasing test accuracy, with 45 MHz BUA threshold, 66.67% sensitivity and 71.43% specificity. Calcaneal BUA is a good indicator of atraumatic vertebral collapse in senile osteoporosis patients; when the weight variable is associated, sensitivity, specificity and positive and negative predictive values (66.67%, 71.43% and 66.6% and 71%, respectively) increase, thus helping define this subgroup of patients.
|Translated title of the contribution||Calcaneal broadband ultrasound attenuation (BUA) in the diagnosis of vertebral fracture in osteoporotic patients|
|Number of pages||5|
|Publication status||Published - Jan 1997|
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging