Indications:

• 1. Simple (Cortical) Mastoidectomy:
  • Removal of the disease from the mastoid antrum or the air cell system with intact bony external canal wall without disturbing the middle ear contents.
  • Indications:
  • Coalescent mastoiditis
  • Unresolving Acute otitis media
  • As an approach to:
  • Facial nerve decompression
  • Endolymphatic sac decompression
  • Labyrinthectomy
• 2. Radical Mastoidectomy:
  • The mastoid antrum and air cell system, aditus ad antrum, attic and middle ear are converted into a common cavity.
  • The eustachian tube opening is plugged by cartilage.
  • The middle ear remnants of tympanic membrane, malleus and incus are removed, except the stapes foot plate if healthy.
  • Indications:
  • Extensive cholesteatoma with evidence of complications.
  • Recurrent cholesteatoma.
  • Malignancy of mastoid bone or middle ear.

• Glomus tumours.
• Tuberculous mastoiditis.

3. Bondy's Modified Radical Mastoidectomy:

• This surgery is similar to radial mastoidectomy but the ossicular chain, the mucosa over promontory, if healthy, is kept intact thus preserving as much of the hearing as possible.
• Indications:
• Cholesteatoma confined to Attic and Antrum.