Clinical imaging · UKMLA & AKT

Extradural haemorrhage

A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise extradural haemorrhage — the full SA Note notes add investigations, management, complications and 10 practice questions.

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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