Neolithic trepanation achieved 70-90% survival rates, outpacing 19th-century hospitals

May 12, 2026Bioarchaeology

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Source: This 31,000-Year-Old Surgery Shouldn’t Exist by Michael Button

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Bio-archaeological surveys at Ensisheim in France reveal Neolithic trepanation patients had remarkable 70-90% survival rates—far exceeding 19th-century hospitals with 50% mortality for major operations. Ancient surgeons used obsidian and flint tools sharper than modern steel on a molecular level. Bone remodeling shows patients lived for months or years after, treated for fractures, chronic migraines, and intracranial pressure. 🧠🔧

Key facts

Trepanation is the oldest known surgical procedure, involving drilling, scraping, or cutting holes in living human skulls
Bio-archaeological surveys at Ensisheim in France and other Neolithic sites reveal survival rates of 70-90%
19th-century hospitals in the 1860s had approximately 50% mortality rates for major operations
Ancient surgeons used flint and obsidian tools, which are sharper than modern surgical steel on a molecular level
Surgeons avoided the superior sagittal sinus, a massive venous channel that would cause fatal hemorrhage if breached
Bone remodeling around trepanation holes proves patients survived for months or years post-surgery
Procedures treated skull fractures, intracranial pressure, and chronic migraines