Sadé Classification of Pars Tensa Retraction
- The Sadé Classification (1993) is used to classify retraction of the pars tensa.
- It is divided into 5 grades.
- Grade 1: Slight retraction of the pars tensa.
- Grade 2: Retraction onto the incus.
- Grade 3: Retraction onto the promontory, but not adherent.
- Grade 4: Adhesion onto the promontory.
- Grade 5: Atelectatic tympanic membrane with perforation.
- The difference between Sadé Grade 3 and Grade 4 retraction can only be identified intraoperatively by assessing whether the tympanic membrane can be lifted off of the promontory.
- If it is non-adherent, it is a Grade 3 retraction. If it is adherent then it is a Grade 4 retraction.
- The corresponding classification system for retraction of the pars flaccida is the Tos and Poulsen Classification.
Last updated October 13, 2022
