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VIDEO: BMI helps predict bone fragility in obese patients



“If you correct the BMD by BMI – so if you use our index – then the correlation becomes more stringent, and definitely so much better,” she said (r = 0.54).

Dr. Watanabe and her colleagues also conducted an analysis to see if there were differences between participants with and without metabolic syndrome. The 45.7% of participants who had metabolic syndrome had similar lumbar spine BMD scores to the rest of the cohort (1.067 versus 1.063 g/cm2, P = .50754).

However, both the TBS and BMD/BMI ratio were significantly lower for those with metabolic syndrome than for the metabolically healthy participants. The TBS, as expected, was 1.21 in patients with metabolic syndrome, and 1.31 in patients without metabolic syndrome; the BMD/BMI ratio followed the same pattern, with ratios of 0.28 for those with, and 0.30 for those without, metabolic syndrome (P less than .00001 for both).

Dr. Watanabe said that she and her associates are continuing research “to see whether our ratio is actually able to predict the risk of fractures." The hope, she said, is to use the BMD/BMI index together with or instead of TBS to better assess bone strength in patients with obesity.

Dr. Watanabe reported that she had no relevant conflicts of interest.

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