Human walking entails coordinated out-of-phase axial rotations of the thorax and pelvis. A long-held assumption is that this ability relies on adaptations for trunk flexibility present in humans, but ...

Explore how bipedalism and naked skin aided early hominids in adapting to African savanna heat stress, leading to significant evolutionary traits. Early hominids may have stood up and gotten naked as ...

The pelvis is often called the keystone of upright locomotion. More than any other part of our lower body, it has been radically altered over millions of years to allow us to accomplish our bizarre ...

Mother Nature has the answer: With the onset of puberty, the female pelvis expands; with the onset of menopause, it contracts again. In contrast, the male pelvis remains on the same developmental ...

At what point did our ancestors learn to walk on two legs? It has long been assumed that because early human ancestors had a similar pelvis and ribcage set up – known as the “trunk” – to chimpanzees, ...

Human childbirth is comparatively difficult because our babies' heads are large relative to our birth canals. This tight 'fetopelvic' fit increases the risk of obstructed labor, which in turn has ...

Women have wider hips than men because their pelves must allow for the birth of large-brained babies. Nevertheless, many female pelves are still not wide enough, which can result in difficult births.