Trepanation as a Plausible Early Form of Cranial Decompression

Area of Science:

• Paleopathology
• Archaeology
• Neurosurgery History

Background:

• Trepanation is the oldest known cranial surgery, with its purpose debated.
• Traditional views include ritual, trauma treatment, or neurological symptom management.

Purpose of the Study:

• To propose a historical-neurosurgical interpretation of trepanation.
• To investigate trepanation as an early empirical form of cranial decompression.

Main Methods:

• Analysis of trepanned individuals from various global sites (Cusco, Greece, Switzerland, France, Spain, Canary Islands).
• Quantitative assessment of perforation frequency and multiplicity.
• Review of archaeological and historical evidence for cranial procedures.

Main Results:

• A significant subset of prehistoric trepanations, particularly in the Cusco region, involved multiple cranial perforations.
• Evidence of repeated cranial intervention across independent ancient populations suggests a meaningful practice.
• Survival rates and technical refinement indicate intentional procedures compatible with pressure relief.

Conclusions:

• Trepanation, in some cases, likely functioned as a pragmatic cranial decompression technique.
• This practice represents an early empirical antecedent to modern neurosurgical decompression procedures.
• The study supports a functional interpretation beyond ritual or simple trauma management for a subset of trepanations.