Summary
During 205 autopsies in Finland, the seventh and twelfth tracheal ring were collected and their cross-sectional shapes and measurements were recorded. Six already known cross-sectional shapes were found, appearing with frequencies which differ from previous studies. New finding: the shape of the seventh ring was different from that of the twelfth in 46% of the male and in 60% of the female cases.
Résumé
Nous avons étudié la configuration et les mesures des 7e et 12e anneaux trachéaux prélevés sur 205 cadavres. Nous avons ainsi observé six morphotypes déjà connus d'anneaux dont la fréquence relative diffère cependant des fréquences observées dans les autres études. Nous avons aussi observé que le septième et douzième anneaux avaient une forme différente dans 46 % des cas chez les hommes et 60 % des cas chez les femmes. Cette observation est à notre connaissance nouvelle.
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Baer, G.A., Terho, M. & Tiensuu, T. Morphologic study of the adult trachea at the 7th and 12th ring. Surg Radiol Anat 9, 169–172 (1987). https://doi.org/10.1007/BF02086602
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DOI: https://doi.org/10.1007/BF02086602