Pars flaccida

The pars flaccida (plural: partes flaccidae), also known as Shrapnell's membrane, is the flaccid portion of the tympanic membrane and represents a small portion of the membrane. It lies superior to the anterior and posterior malleolar folds. When compared to pars tensa, the middle fibrous layer is poorly developed in pars flaccida, contributing to its flaccid nature. 

It extends upwards from the anterior and posterior malleolar folds at the level of the lateral process of malleus. Hence, it sits between the scutum and malleus.

Related pathology

Anatomy: Head and neck

Anatomy: Head and neck

Article information

rID: 10524
System: Head & Neck
Section: Anatomy
Synonyms or Alternate Spellings:
  • Flaccid portion of tympanic membrane

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Fig 1: auditory anatomy - Gray's anatomy illustration
    Drag here to reorder.
  • Fig 2: auditory anatomy - Gray's anatomy illustration
    Drag here to reorder.
  • Fig 3: cholesteatoma formation (illustrations)
    Drag here to reorder.
  • Fig 4: cholesteatoma formation (illustrations)
    Drag here to reorder.
  • Fig 5: auditory anatomy - Gray's anatomy illustration
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.