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Related Experiment Videos

Postnatal changes of the clivus.

Jelena Krmpotić-Nemanić1, Ivan Vinter, Zlatko Kelovizć

  • 1Department of Anatomy "Drago Perović", Medical Faculty Zagreb, Salata 11, 10000 Zagreb, Croatia.

Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft
|September 1, 2005
PubMed
Summary

The clivus, a key skull base region, reaches its final adult length by age 11. Other clival measurements show no significant age-related differences after childhood.

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Area of Science:

  • Anatomy
  • Anthropology
  • Osteology

Background:

  • The clivus is a crucial anatomical region at the skull base.
  • Understanding clival development is important for anatomical and anthropological studies.

Purpose of the Study:

  • To investigate the dimensional changes of the clival region throughout human lifespan.
  • To determine the age at which the clivus reaches its final adult dimensions.

Main Methods:

  • Measurements of clival length, diameters, and jugular tubercle distance were taken from 77 human skull bases.
  • Skeletons ranged in age from 3 to 80 years.
  • Data were analyzed across four age groups: 3-10, 11-25, 26-60, and 61-80 years.

Main Results:

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  • The final length of the clivus was achieved by 11 years of age in both sexes and remained constant thereafter.
  • No significant differences were observed in other clival measurements (widest/narrowest diameter, jugular tubercle distance) among the age groups.
  • Clival length showed a significant positive correlation with age (Pearson's r = 0.336, P = 0.0028).

    • Conclusions:

    • Postnatal development up to 11 years is critical for clival growth, establishing final adult width and length.
    • The clivus exhibits significant growth primarily during early life, with dimensions stabilizing by adolescence.