The loss rate of BMC value was similar between cancellous bone and cortical bone (P > 0.05).

不同年龄组的松质骨与皮质骨骨密度年丢失率无差异（P>0.05）。

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The loss rate of BMC value was similar between cancellous bone and cortical bone (P > 0.05).

不同年龄组的松质骨与皮质骨骨密度年丢失率无差异（P>0.05）。

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