摘要: The scientific and experimental basis for present day functional surgery of the ear was laid in seventies last century. At that time European, mainly German, scientists clinicians developed successful surgical procedures to treat inflammatory middle diseases. Authors such as Berthold1, Kessel2, Hoffmann3, v.Troltsch4, Ely5, Tangemann6developed operations more than 100 years ago, which even then resembled todays concepts.