The Lower Limb and Mechanics of Walking in Australopithecus sediba

  title={The Lower Limb and Mechanics of Walking in Australopithecus sediba},
  author={Jeremy M. DeSilva and Kenneth G. Holt and Steven Emilio Churchill and Kristian J. Carlson and Christopher S. Walker and Bernhard Zipfel and Lee R. Berger},
The discovery of a relatively complete Australopithecus sediba adult female skeleton permits a detailed locomotor analysis in which joint systems can be integrated to form a comprehensive picture of gait kinematics in this late australopith. Here we describe the lower limb anatomy of Au. sediba and hypothesize that this species walked with a fully extended leg and with an inverted foot during the swing phase of bipedal walking. Initial contact of the lateral foot with the ground resulted in a… 
Adaptation to suspensory locomotion in Australopithecus sediba.
Rearfoot posture of Australopithecus sediba and the evolution of the hominin longitudinal arch
  • T. Prang
  • Geography, Environmental Science
    Scientific reports
  • 2015
It is shown that A. sediba is indistinguishable from extant African apes in the angular configuration of its rearfoot, which strongly suggests that it lacked a longitudinal arch, which supports the hypothesis that Australopithecus afarensis possessed an arched foot.
Human-like hip joint loading in Australopithecus africanus and Paranthropus robustus.
Australopithecus sediba Computer Animation of the Walking Mechanics of Australopithecus sediba
  • Biology
  • 2019
A digital animation of the proposed walking mechanics in this ancient human relative, Australopithecus sediba, is presented here, partially from this visualized form of walking that predictions can be generated to continue to test the hyperpronation hypothesis.
Australopithecus sediba Body Size and Proportions of Australopithecus sediba
While the timing, duration, and nature of the shift is debated, human evolution ultimately involved an increase in body size relative to our Miocene ancestors, and a transition from a more arboreal
Osteology and Functional Morphology of the Hind Limb of the Marine Sloth Thalassocnus (Mammalia, Tardigrada)
The comparison of the species of Thalassocnus with each other suggests a progressive shift to a particular ecology from the earliest to the latest species of the genus, a conclusion in agreement with those of the studies of craniomandibular, dental, and forelimb gross morphology, and bone internal microstructure.
Hip extensor mechanics and the evolution of walking and climbing capabilities in humans, apes, and fossil hominins
This study integrates 3D morphometrics of hominoid pelvic shape with experimental measurements of hip kinematics and kinetics during walking and climbing, hamstring activity, and passive range of hip extension in humans, apes, and other primates to assess arboreal–terrestrial trade-offs in ischium morphology among living taxa.
The Vertebral Column of Australopithecus sediba
Two partial vertebral columns of Australopithecus sediba grant insight into aspects of early hominin spinal mobility, lumbar curvature, vertebral formula, and transitional vertebra position. Au.
Chimpanzee ankle and foot joint kinematics: Arboreal versus terrestrial locomotion.
It is argued that chimpanzee foot anatomy enables a versatile locomotor repertoire, and urge caution when using foot joint morphology to reconstruct arboreal behavior in fossil hominins.


The Upper Limb of Australopithecus sediba
The well-preserved forelimb remains of 1.98-million-year-old Australopithecus sediba from Malapa, South Africa, contribute to understanding of this evolutionary transition from its use for both locomotion and prehension to a predominantly prehensile and manipulative role.
Combining Prehension and Propulsion: The Foot of Ardipithecus ramidus
The last common ancestor of hominids and chimpanzees was therefore a careful climber that retained adaptations to above-branch plantigrady and would thus have been unique among known primates.
The distal femoral anatomy of Australopithecus.
The distinctive hominid status of these specimens is shown by their extensive adaptation to bipedal locomotion, which points to a need for a reanalysis of the gait pattern in these early Pleistocene hominids.
The natural history of human gait and posture. Part 3. The knee.
The Foot and Ankle of Australopithecus sediba
Observations suggest, if present models of foot function are correct, that Au.
The locomotor anatomy of Australopithecus afarensis.
It is demonstrated that A. afarensis possessed anatomic characteristics that indicate a significant adaptation for movement in the trees, and it is speculated that earlier representatives of the A.Afarensis lineage will present not a combination of arboreal and bipedal traits, but rather the anatomy of a generalized ape.
Australopithecus sediba Hand Demonstrates Mosaic Evolution of Locomotor and Manipulative Abilities
The hand of Australopithecus sediba, a rare example in the hominid fossil record, shows short fingers and a long thumb consistent with improved precision gripping while retaining strength for climbing, suggesting at least two distinct hand morphotypes around the Plio-Pleistocene transition.
Dynamic plantar pressure distribution during terrestrial locomotion of bonobos (Pan paniscus).
A varus position of the foot with an abducted hallux is observed, which likely possesses an important sustaining and stabilizing function during terrestrial locomotion.
Complete Fourth Metatarsal and Arches in the Foot of Australopithecus afarensis
A long bone of the foot of an early human indicates that its foot was stiff and arched, as in modern humans, and support the hypothesis that this species was a committed terrestrial biped.