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Anu

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  • 1. The mastoid bone is a bone located behind the ear (felt as a hard bump behind the ear). Inside it looks like a honeycomb, with the spaces filled with air. These air cells are connected to the middle ear through an air filled cavity called the mastoid antrum. Mastoid process
  • 2.
    • Mastoidectomy
    • A mastoidectomy is a surgical procedure designed to remove infection or growths in the bone behind the ear (mastoid bone). Its purpose is to create a "safe" ear and prevent further damage to the hearing apparatus.
    • Indications:
    • MASTOIDITIS that does not respond to antibiotics.
    • CHOLESTEATOMA.
    • Repair an injured FACIAL NERVE.
  • 3.
    • Simple mastoidectomy
    • Radical mastoidectomy
    • Modified radical mastoidectomy
    Types of mastoidectomy
  • 4. Simple mastoidectomy
    • Indication:
    • Mastoiditis
    • Acute otitis
    • Steps of operation
    • Incision
    • Exposure of lateral surface of mastoid and MacEwens triangle
    • Removal of mastoid processmand exposure of antrum
    • Removal of mastoid air cell
    • Removal of mastoid tip and finishing the cavity.
    • Closure of wound
  • 5.
    • Post operative care
    • Antibiotics
    • Drainage
    • Complications
    • Injury to facial nerve
    • Dislocation of incus
    • Injury of horzintal semicircular canal
    • Post operative wound infection
  • 6.
    • Indication
    • Cholesteatoma
    • Removal of glomus tumour
    • Carcinoma of middle ear
    Radical mastoidectomy
    • Steps of operations
    • Incision
    • Retraction of soft tissue and exposure of mastoid area
    • Removal of bone and exposure of attic and antrum.
    • Removal of bridge and buttresses
    • Lowering the facial ridge
    • Removal of remnants from middle ear
    • Inspection of cavity and irrigation
    • Meatoplasty
    • Obliteration of cavity
    • Closure of wound
  • 7.
    • Complication
    • Facial paralysis
    • Perichondritis of pinna
    • Labyrinthitis if stapes get dislocated
    • Conductive deafness
    Post operative care Dressing Antibiotics
  • 8.
    • Indication
    • Cholesteatoma confined to attic and antrum
    • Localizes chronic otistis media
    Modified radical mastodectomy
    • Steps of operation
    • Incision
    • Retracrtion of soft tissue and exposure of mastoid area
    • Removal of cortical bone and exposure of antrum and attic
    • Removal of diseased tissue
    • Facial ridges is lowered
    • Mastoid cavity is smoothened with polishing burr
    • Reconstruction of hearing mechanism
    • Meatoplasty
    • Closure of wound
  • 9. Mastoidectomy Procedure
  • 10. Meatoplatsy
    • Cartilage excision
  • 11. Meatoplasty
    • Skin flap
  • 12. Picture of Mastoidectomy showing a large cholesteatoma in the mastoid antrum .
  • 13. A meatoplasty has been performed to enlarge the external auditory canal and allow easy access to the mastoid bowl for inspection and cleaning. The reconstructed eardrum is seen anteriorly.
  • 14. Left Canal Wall Down Mastoidectomy. This patient had a modified radical mastoidectomy with tympanoplasty. The posterior bony canal has been removed and part of the dry "mastoid bowl" is visible posterior and superior to the reconstructed tympanic membrane.