Otosclerosis

From greek.doctor
  • Otosclerosis
    • Abnormal bone growth of the bony labyrinth
    • The stapes becomes increasingly fixated to the oval window -> progressive conductive HL
    • Can also affect cochlea
    • Epidemiology
      • Whites
      • Females
      • Adults
    • 50% autosomal dominant, 50% sporadically
    • Diagnosis
      • Decreased air conduction on pure tone
      • Carhart notch on audiogram
      • Normal otoscopy
    • Treatment
      • Stapes replaced by prosthesis – stapedotomy


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