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Related Experiment Videos

[Anthropometric study on normal human auricle in Japan].

I Itoh1, M Ikeda, K Sueno

  • 1Department of Otolaryngology, Nihon University School of Medicine, Tokyo.

Nihon Jibiinkoka Gakkai Kaiho
|March 22, 2001
PubMed
Summary

Japanese auricular morphology shows significant growth throughout life. Auricular size has increased compared to past generations, with continued changes observed into adulthood.

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Area of Science:

  • Anthropology
  • Gerontology
  • Human biology

Background:

  • Japanese population exhibits increasing physical stature and longevity.
  • Understanding anthropometric changes across the lifespan is crucial.

Purpose of the Study:

  • To investigate anthropometric auricular morphology in Japanese individuals across all age groups.
  • To document changes in ear size and shape over time in the Japanese population.

Main Methods:

  • Study involved 1,958 healthy Japanese participants (966 males, 992 females) across 18 age groups.
  • Measurements included ear length, ear width, ear attachment length, auricular cartilage length, and auricular lobe length.
  • Standardized caliper measurements were performed by a single observer.

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Main Results:

  • Males generally exhibited larger auricular measurements than females across most age groups.
  • Significant auricular growth occurred until late adolescence, with continued growth into advanced age.
  • Current auricular size in Japanese individuals is larger than historical data.

Conclusions:

  • Auricular size changes are influenced by growth up to late adolescence.
  • Age-associated auricular morphology changes persist throughout adulthood in the Japanese population.