• D A Lloyd, H Carty, M Patterson, C K Butcher, and D Roe.
• Department of Paediatric Surgery, Alder Hey Children's Hospital, Liverpool, UK.
• Lancet. 1997 Mar 22;349(9055):821-4.

BackgroundThe value of routine skull radiography as a method of predicting intracranial injury is controversial. We aimed to assess the effectiveness of skull radiography by prospectively studying head-injured children admitted to a children's hospital that serves an urban population.MethodsOver a 2-year period, 9269 children attended our accident and emergency department with head injury, and 6011 were referred for skull radiography. All children who were admitted to hospital or had a skull fracture (n = 883) were included in the study. Computed tomography (CT) was done in children with skull fractures on radiography and in those without fractures if there were neurological indications.FindingsRadiographs showed 162 fractures (2.7% of all radiographs and 18% of study group radiographs). Staff in the accident and emergency department missed 37 (23%) fractures. CT scan was done on 156 children, of whom 107 had a skull fracture. 23 children were found to have intracranial injuries on CT. The presence of neurological abnormalities had a sensitivity for identification of intracranial injury of 91% (21 of 23) and a negative predictive value of 97%. The corresponding values for skull fracture on radiography were 65% (15 of 23) and 83%. Four children died, of whom only one had a skull fracture.InterpretationIn children, severe intracranial injury can occur in the absence of skull fracture. Skull radiography is not a reliable predictor of intracranial injury and is indicated only to confirm or exclude a suspected depressed fracture or penetrating injury, and when non-accidental injury is suspected, including in all infants younger than 2 years. Clinical neurological abnormalities are a reliable predictor of intracranial injury. If imaging is required, it should be with CT and not skull radiography.

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