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Genetic factors are known to explain a major proportion of peak bone mineral mass variance. Whether the influence of these genetic factors is expressed before the pubertal bone mineral mass accrual and whether there is tracking of bone mineral mass during pubertal growth, however, are not clearly established. We prospectively investigated correlations for bone mineral content (BMC), density, and bone size between prepubertal daughters and their premenopausal mothers.

Height, weight, lumbar spine (LS), femoral neck (FN) and midfemoral diaphysis BMC, bone area (BA), areal bone mineral density (aBMD), and volumetric bone mineral apparent density (BMAD) were evaluated in 138 mothers (mean age ± sd, 40.0 ± 4.0 yr) and their daughters (8.1 ± 0.7 yr), who were then remeasured at yearly intervals for 2 yr.

Eight-year-old prepubertal daughters had reached 78% and 44% of their mothers’ height …