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Updated: May 31, 2026

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
[Evolution of the pelvis and hip throughout history: from primates to modern man]
F Lapègue1, M Jirari, S Sethoum
1Service deRadiologie, CHU de Toulouse-Purpan, Bâtiment Putois, Place du Dr-Baylac, TSA 40031, 31059 Toulouse cedex 9, France. franck.lapegue@gmail.com
Abstract:
The evolution to a bipedal mode of locomotion was accompanied by a verticalization of the spine and a modification in the shape of the pelvis: horizontal curvature and sagittal rotation. Phylogenesis meets ontogenesis: flat bones in fetuses similar to the monkey, australopithecus features at birth and "human-like" features by 7 or 8years of age. These anatomical modifications explain the characteristics of human bipedalism: stable, economical, with hip and knee extension in the standing position with little lateral motion. Some pathologies induce a regression to a more archaic mode of bipedal locomotion.
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