Brace and bit cranial trephine, c 18th century.
4 0 c m
actual image size: 23cm x 32cm

Brace and bit cranial trephine, c 18th century.

Fernandes, Iris

© Science Museum / Science & Society Picture Library


A trephine is a crown saw used for perforating the skull and removing a circle of tissue or bone. Trepanning is an ancient operation in which a hole is drilled, chiselled or cut into the skull. In the 18th century it was carried out, for example, to treat serious skull fractures. Trephination as a therapeutic or magico-religious procedure dates back to Neolithic times, with trephines (or 'trepans') often used as a method of releasing evil spirits from the patient. Over the centuries, this surgical procedure continued to be used to treat a variety of symptoms, from migraine to mental illness.



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