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.



A tympanosclerotic tympanic membrane with an area of retraction onto the incudostapedial joint with a very eroded long process of incus.  The chorda tympani is in close proximity to the joint and is visible posterior to this structure.