Standing Might Be to Blame for Our Twisted Pelvic Canal Our complicated birthing process could relat …

standing might be to blame for our twisted pelvic canal our complicated birthing process could relate in part to balancing on two legs

Sumary of Standing Might Be to Blame for Our Twisted Pelvic Canal Our complicated birthing process could relate in part to balancing on two legs.:

  • 15, 2021 — Giving birth may be so arduous for humans in part because the pelvis is optimized for standing upright, a new study suggests.
  • The same approach has been used to identify key elements of a perfect fastball in baseball and the best marathon gait.
  • Because the shape of the human pelvic canal doesn’t make for a fast or easy birth, the investigators wondered if its dimensions were linked to some other human feature.
  • In apes, this canal is a simple oval throughout, so labor and delivery might be easier for these species, the scientists note.
  • But the oval in the human canal changes direction through the pelvis, requiring babies to rotate during delivery so that the head and shoulders can pass through.
  • Computer modeling with digital images suggested that the stress and pressure of being upright on two legs might give the pelvic canal its twist.

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