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Bone age and onset of puberty in normal boys

Armando Flor-Cisneros1, James N Roemmich, Alan D Rogol

  • 1Bone and Extracellular Matrix Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892-1829, USA.

Molecular and Cellular Endocrinology
|July 14, 2006
PubMed

Insights

Skeletal maturation does not appear to influence pubertal onset in normal boys. This study found no significant correlation between bone age advancement and the timing of puberty, challenging previous assumptions.

Area of Science:

  • Pediatric Endocrinology
  • Human Growth and Development

Background:

  • Conditions affecting skeletal maturation often correlate with pubertal timing.
  • This observation suggests a potential link between skeletal development and pubertal onset.

Purpose of the Study:

  • To investigate if skeletal maturation influences pubertal onset in healthy boys.
  • To determine the relationship between bone age and pubertal advancement in a normal pediatric cohort.

Main Methods:

  • Longitudinal analysis of 30 normal boys.
  • Regular assessments of height, weight, serum testosterone, and bone age (Fels method).
  • Pubertal onset defined by serum testosterone levels (≥30 ng/dL).

Main Results:

  • Bone age variability at pubertal onset was comparable to chronological age variability.
  • No significant correlation was found between skeletal advancement and pubertal advancement (r=0.01, P=0.9).
  • No significant correlation existed between pubertal advancement and height age, weight age, or BMI age advancement.

Conclusions:

  • The findings do not support the hypothesis that skeletal maturation directly impacts the timing of pubertal onset in normal boys.
  • The observed concordance in conditions with delayed or accelerated maturation may not extend to healthy individuals.

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