Presentation
History of head trauma and vertigo.
Patient Data
Age: 12 years
Gender: Male
From the case:
Incudomalleolar dislocation
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Info
Evidence of chronic incudomalleolar subluxation. The long process of the incus is pointing in the fossa incudis, with consequent total incudostapedial dislocation. There is also normal loss of the ice cream cone appearance.
Case Discussion
Ossicular chain disruption is not uncommon complication following trauma to the head and temporal bone. Meriot et al has identified five types of ossicular injuries following trauma 1:
- incudostapedial joint separation
- incudomalleolar joint separation
- dislocation of the incus
- dislocation of the malleoincudal complex
- stapediovestibular dislocation
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