trephine

He opposed violently the prevalent abuse of the trephine, and was also a champion of healing by first intention.

The galvano-cautery, trephine, and spokeshave should be avoided.

Their removal may also be satisfactorily effected with a minute cutaneous trephine.

Celsus graphically describes the trephine and the method of its application.

The trephine used should be three-quarters of an inch to one inch in diameter according as the patient is a child or an adult.