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“Ultimately, why we birth the way we do transcends the boundaries of our bones. Physiologic labor is a complex process involving, yes, bones, but also tissues, muscles, organs, cells, hormones, an exchange of signals between two people, mechanical changes, emotions. Bones are easier to see and study, so bone shape and size are what obstetricians, historians, and anthropologists have historically prioritized.” — Allison Yarrow
Ultimately, why we birth the way we do transcends the boundaries of our bones. Physiologic labor is a complex process involving, yes, bones, but also tissues, muscles, organs, cells, hormones, an exchange of signals between two people, mechanical changes, emotions. Bones are easier to see and study, so bone shape and size are what obstetricians, historians, and anthropologists have historically prioritized.