Mental Health Treatment | Trepanation / Trephination | Drilling Holes Into the Skull @MentalHealthTreatment | Uploaded June 2021 | Updated October 2024, 45 minutes ago.
Trepanning operation filmed on 16mm Kodachrome film Trepanning is said to be the oldest known surgical procedure. As we can see here, the procedure itself is not very complicated, and there have indeed been several well documented cases of people performing it on themselves.