Pars Tensa Retractions
In the same way that the pars flaccida is vulnerable to retraction, the pars tensa may also become retracted. This usually occurs at the posterosuperior section of the pars tensa, where it may involve the long process of the incus, stapes and other middle ear structures.
Severe retraction of the posterior part of the tympanic membrane. The retraction has retracted onto the promontory and has eroded some of the long process of the incus. The incudostapedial joint is visible.