Age-related loss of trabecular bone in premenopausal women: A biopsy study

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Abstract
We measured the trabecular bone volume (TBV) of 62 iliac crest biopsies taken from women admitted to lymphoma protocols at Stanford University between 1970–1981. All subjects were active, cycling premenopausal women, with bone marrows that were negative for tumor. Disease status was stage III or less in 90% of the subjects. Trabecular bone volume was negatively correlated with age, and the annual predicted loss of bone was 0.14–0.18% TBV, or 0.7% of the original bone volume. In addition, there was a substantial range of normal TBV at any given age, evident even during adolescence. This study demonstrates that TBV is lost from iliac crest throughout adult life. The large spread in TBV indicates further that factors operating during adolescence or even earlier may have an important impact on skeletal mass.

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