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Original Research

RMJ. 2017; 42(4): 484-489

Difference in bone mineral density score on dual Xray absorptiometry scan among ethnic groups of Karachi, Pakistan.

Saima Athar Shaikh, Jawaid Iqbal, Lubna Faisal, Zia ul Islam, Rizwan Ajmal.


Objective: To determine the bone mineral density (BMD) scores on Dual energy X ray absorptiometry (DEXA) scan in individuals of different ethnic groups among local population of Karachi, Pakistan.
Methodology: This cross sectional study was conducted in Departments of Anatomy and Radiology, Liaquat National Hospital and Medical College Karachi, from June 2016 to March 2017. The data were collected from the patients belonging to different ethnic groups, who were referred for DEXA scan and entered on structured proforma. SPSS 21 was used for data analysis.
Results: Out of 232 patients, 206 were females and 26 were males with mean age of 59.6±10.06 years. Majority of patients were resident of Karachi and belonging to Urdu speaking ethnic group. Mean BMI of patients was 29.35±6.69 and most of patients with osteoporosis were preobese and obese with BMI >25. The relationship of BMD with different ethnic groups showed statistically significant difference where Baloch had high incidence of osteoporosis of forearm and lumbar spine while Sindhi and Pathan had osteoporosis of hip.
Conclusion: There is significant difference in BMD score on DEXA scan among different ethnic groups of Karachi. This information can help clinicians advise patients for timely DEXA scan and earlier use of bone preservation treatment.

Key words: Bone mineral density, body mass index, DEXA scan, ethnicity, osteoporosis.

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