Analyse morphologique et fonctionnelle du pelvis des primates Catarrhiniens : conséquences pour l'obstétrique


fr Comptes Rendus Palevol 5 (3-4) - Pages 551-560

Published on 30 April 2006

This article is a part of the thematic issue One hundred years after Marey: some aspects of Functional Morphology today

Morphological and functional analysis of the pelvis in Catarrhines: consequences for obstetrics

The study aimed at connecting obstetrical adaptations in Catarrhines with (1) locomotor specializations in the pelvic cavity, and (2) neonate encephalization. The material comprised 49 pelves, 18 skulls of adult females, and 9 neonate skulls. The neonate dimensions were placed in the pelvic inlet, midplane and outlet (mean pelvic shape obtained by Procrustes superimposition) and compared with adult dimensions. The results showed that non-human primates possess simple obstetrical mechanics that may present some difficulties, either because the fetus is proportionally large (Hylobates), or because locomotor specializations reduce the pelvic dimensions (Papio). Humans have complex obstetrical mechanics, resulting from bipedalism and parturition interactions. Encephalization did not play a determinant role in the evolution of human obstetrics.


Pelvis, Foetus, Obstetrics, Locomotion, Encephalization, Macaca, Papio, Hylobates, Pan, Gorilla, Homo

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