Ossicular Chain Disruption

Aka: Ossicular Chain Disruption, Ossicle Chain Disruption, Ear Ossicle Discontinuity

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II. Causes

  1. Ear Trauma
  2. Recurrent Otitis Media

III. Signs

  1. Conductive Hearing Loss
  2. Otoscopy is often normal
    1. May reveal grossly altered position of Ossicles

IV. Imaging

  1. Non-contrast CT Temporal Bone

V. Differential Diagnosis

  1. See Conductive Hearing Loss

VI. Management

  1. Ossicular Chain Reconstruction

VII. References

  1. Michels (2019) Am Fam Physician 100(2): 98-108 [PubMed]

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