Trephination

Trepanation or trepanning is a surgical intervention in which a hole is drilled or scraped into a human skull, in order to to treat health problems related to intercranial disease. In 19 BBY, emergency trepanation was performed on Darth Vader on his way to Coruscant on the Palpatine's shuttle, following his near immolation on Mustafar.

Appearances

 * ''Dark Lord: The Rise of Darth Vader