Fetal load and the evolution of lumbar lordosis in bipedal hominins

@article{Whitcome2007FetalLA,
  title={Fetal load and the evolution of lumbar lordosis in bipedal hominins},
  author={Katherine K Whitcome and Liza J Shapiro and Daniel E. Lieberman},
  journal={Nature},
  year={2007},
  volume={450},
  pages={1075-1078}
}
As predicted by Darwin, bipedal posture and locomotion are key distinguishing features of the earliest known hominins. Hominin axial skeletons show many derived adaptations for bipedalism, including an elongated lumbar region, both in the number of vertebrae and their lengths, as well as a marked posterior concavity of wedged lumbar vertebrae, known as a lordosis. The lordosis stabilizes the upper body over the lower limbs in bipeds by positioning the trunk’s centre of mass (COM) above the hips… 

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