Evolution of the human pelvis

Brain size has a strong effect on human hip bones. The shape of human hip bones results from a compromise between walking on two legs and giving birth to large-brained babies.Humans need narrow hips to walk on two legs, but they also need wide hips to have babies with big brains. This problem is known as the obstetrical dilemma.

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The Daily Targum

Photographs showing the evolution of the shape and orientation of

Evolutionary Anatomy – Walking Upright and Childbirth – The HAPS Blog

Developmental evidence for obstetric adaptation of the human

PDF) The evolution of the human pelvis: changing adaptations to bipedalism, obstetrics and thermoregulation

The evolution of pelvic canal shape and rotational birth in humans

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PDF) Evolution of the Human Pelvis

Why Textbooks May Need to Update What They Say About Birth Canals

Evolutionary Anatomy – Walking Upright and Childbirth – The HAPS Blog