PREVALENCE OF OSTEOPOROSIS IN SUB-URBAN POPULATION OF CHENNAI USING QUS (QUANTITATIVE ULTRASOUND) OF CALCANEUM -A CROSS SECTIONAL STUDY

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Background:Burden of Osteoporosis and its related fractures are enormous and growing public health concern. Worldwide, an estimated 200 million adults suffer from osteoporosis. Vertebral and non-vertebral fractures are the most clinically relevant osteoporotic fracture because they are expensive to treat and have severe consequences for middle aged and elderly population.(1 ,2) The purpose of our study was to assess calcaneal ultrasound score as a screening test for osteoporosis. Material and Methods: Fifty patients above the age of 40 years who attended a health checkup camp conducted by our institute in a suburban population base of Chennai,Tamilnadu was subjected for noninvasive QUS of calcaneum bone as a screening test for osteoporosis. They were divided into different age groups ,co-morbid conditions noted and BMD scores from QUS was assessed. Statistical method were used with SPSS Version .It was a cross sectional descriptive study. Results: A total of 50 patients underwent QUS of calcaneum bone in our study , all of them above the age of 40 years. 33(66%) of them were females and 17(34%) were males. Eight patients( 16% ) had T score < -2.5 out of which 1 was male. 26 patients(52%) had T scores in the osteopenic range (-1>Tscore>-2.5).16 patients(32%) had T scores in the normal range. 40 % of patients had associated osteoarthritis and four patients had diabetes. 2 patients who underwent screening had past history of nontraumatic fractures. Conclusion: QUS of calcaneum is a good screening tool for assessing bone density in our country since its cost effective and can be used in various screening camps. The machine is portable and can be used with minimal training making it easier for the primary caregiver. It has reasonably good sensitivity and fair specicity when using Tscore of -2.5 as the cut off point. However DEXAis the gold standard for treatment and followup of patients with osteoporosis.