Glossary of Brant and Helms -- Neuro
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- Where is temporal bone fracture often first suspected?
- On head CT to rule out intracranial injury
- What are the findings suspicious for temporal bone fracture on head CT?
- 1) Opacification of mastoid air cells
3) Fluid in middle ear
4) Air in the bony labyrinth (rare)
- What are temporal bone fractures classified by?
- Orientation, with respect to the orientation of the petrous portion of temporal bone
- What is the most common type of temporal bone fracture?
- That which parallels the long axis of the temporal bone, the longitudinal fracture
- What percent?
- 80% of t-bone fractures
- How does it occur?
- blow to side of head
- Which type of t-bone fx is more severe?
- What are common sequelae of longitudinal t-bone fx?
- dislocation of ossicles, with resultant conductive hearing loss
- How does transverse fracture occur?
- Blow to frontal or occipital region
- What are common sequelae of longitudinal t-bone fxs?
- Sensorineural hearing loss
- What percent have facial nerve injury?
- What other structure is often injured?
- Carotid or jugular
- Where do venous epidurals occur?
- Along dural venous sinus
- Vertex (sup sag sinus)
Posterior fossa (sigmoid sinus)
- What are the locations where carotid injury most commonly occurs from trauma?
- Points of fixation
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