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Growth patterns in the modern human skeleton

L T Humphrey1

  • 1Department of Palaeontology, The Natural History Museum, London, United Kingdom.

American Journal of Physical Anthropology
|April 16, 1998
PubMed
Summary
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Human skeletal growth varies by body region and sex. This study reveals diverse patterns in how different skeletal parts reach adult size, impacting sexual dimorphism development.

Area of Science:

  • Anthropology
  • Human Biology
  • Skeletal Biology

Background:

  • Understanding human skeletal growth patterns is crucial for developmental biology and anthropology.
  • Previous research has identified variations in growth rates across different skeletal regions.
  • Sexual dimorphism in the human skeleton is a well-documented phenomenon, but its ontogenetic basis requires further investigation.

Purpose of the Study:

  • To investigate cross-sectional growth patterns in the human skeleton using a recent skeletal sample.
  • To evaluate growth using a single-phase Gompertz curve across different functional regions of the cranium, mandible, and postcranial skeleton.
  • To introduce a method for objective, quantitative comparison of skeletal growth and analyze sexual differences.

Main Methods:

Related Experiment Videos

  • Utilized a recent skeletal sample with known age and sex.
  • Selected measurements reflecting functional regions of the cranium, mandible, and postcranial skeleton.
  • Applied a single-phase Gompertz curve to evaluate skeletal growth patterns.

    • Main Results:

    • Different skeletal regions exhibit distinct proportions of adult size at birth and varying rates of growth.
    • Introduced a novel method for objective and quantitative comparison of skeletal growth samples.
    • Sexual dimorphism in the postcranial skeleton was analyzed, revealing differences in growth rates and durations between males and females.
    • Adult sexual dimorphism is less pronounced in early-growing variables compared to later-growing ones.

    Conclusions:

    • The development of sexual dimorphism in the human skeleton is a diverse phenomenon, not uniform across all skeletal regions.
    • Ontogenetic trajectories of growth significantly influence the manifestation of sexual dimorphism.
    • Findings highlight the complexity of human skeletal development and the varied origins of sexual dimorphism.