Contribution
Homo naledi did not have flat foot
Li, Ruining; Fan, Yuxuan; Liu, Yaming; Antonijevic, Ðorđe; Li, Zhiyu; Djuric, Marija; Fan, Yifang
HOMO Volume 70 No 2 (2019), p. 139 - 146
publié: Oct 24, 2019
publication en ligne: Sep 5, 2019
manuscrit accepté: May 2, 2019
revision du manuscrit reçu: Apr 28, 2019
révision du manuscrit demandée: Apr 16, 2019
manuscrit reçu: Aug 27, 2018
ArtNo. ESP139007002004, Prix: 29.00 €
Abstract
The collection of 1550 Homo naledi fossil remains includes six tarsal and five metatarsal bones from the right foot, forming a nearly complete humanlike flat foot arch. The missing right medial cuneiform, however, raises our interest to explore the true structure of Homo naledi’s foot arch. We hypothesize that Homo naledi does not have flat foot. To verify our hypothesis, the left medial cuneiform of Homo naledi was mirrored using three-dimensional reconstruction and virtual model analysis. Then, we defined quantities of Euler, standardized the body coordinate system of foot bone and developed a new foot arch reconstruction method based on discrete bones. The reconstructed transverse foot arch corroborated our hypothesis, thus providing biomechanical evidence for interpreting the evolution of human locomotion and bringing novel ideas to the research of the biomechanical mechanism of ankle stability.
Mots-clefs
Homo naledi • metatarsal bones • terrestrial bipedalism • foot arch • ankle stability