Abstract
Labyrinthotomy, or drainage of the labyrinth, would describe more accurately the various operations on the labyrinth. The presence of the facial nerve superimposed on the labyrinthine capsule precludes a complete exenteration of the membranous labyrinth unless the Uffenorde method is adopted. This isolates and exposes the facial nerve, lifts it from its bony bed and places it aside, where it will not be subject to injury during operation. After the semicircular canals and the vestibule have been opened and the membranous labyrinth curetted away, the facial nerve is replaced on its bony viaduct. Uffenorde has never encountered a lasting facial paralysis as a result of operation by this method.1 All other classic operations on the labyrinth strictly preserve the integrity of the bony canal protecting the facial nerve. There are two major problems of localization involved in an attack on the labyrinth: The position and extent of the vestibule
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