Clinical imaging · UKMLA & AKT
Extradural haemorrhage
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- Blood between inner skull and dura mater - arterial bleeding (middle meningeal artery) in most cases
- Pterion is thinnest skull bone - overlies middle meningeal artery; temporal blow → fracture → arterial laceration
- Dura tethered at suture lines → haematoma cannot cross sutures → biconvex (lentiform) shape on CT
- Peak incidence 20-30 year olds; males 3x more common
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