title: Abusive head trauma: judicial admissions highlight violent and repetitive shaking.
abstract: OBJECTIVE
  Confessions are uncommon in abusive head trauma (AHT) cases, and there is debate over whether shaking alone can cause the injuries characteristic of AHT. The objective of this article is to correlate legal statements by perpetrators with medical documentation to offer insights into the mechanism of injury.
  
  
  METHODS
  In this retrospective observational study we examined forensic evidence from 112 cases referred for AHT over a 7-year period. We compared 29 cases in which a perpetrator confessed to violence toward the child with 83 cases in which there was no confession. Inclusion criteria were subdural hematoma (SDH) on computed tomography and perpetrator admission of a causal relationship between the violence inflicted and the child's symptoms. Groups were compared by using Student's t test for age and Fisher's exact test for gender, death, fractures, retinal hemorrhages, ecchymoses, symptoms, and SDH patterns. All medical records from birth to diagnosis, imaging studies, and written investigation reports were reviewed.
  
  
  RESULTS
  All confessions came from forensic investigations. There was no statistically significant difference between the 2 groups for any of the variables studied. Shaking was described as extremely violent (100%) and was repeated (55%) from 2 to 30 times (mean: 10) because it stopped the infant's crying (62.5%). Impact was uncommon (24%). No correlation was found between repeated shaking and SDH densities.
  
  
  CONCLUSIONS
  This unique forensic case series confirms the violence of shaking. The high frequency of habitual AHT is a strong argument for reporting suspected cases to judicial authorities and helps to explain the difficulty in dating the injuries.
authors.affiliation: Pediatric Radiology Department, St Vincent de Paul Hospital, 82 Avenue Denfert Rochereau, 75674 Paris Cedex 14, France. c.adamsbaum@svp.aphp.fr
authors.forename: Catherine
authors.initials: C
authors.lastname: Adamsbaum
authors.forename: Sophie
authors.initials: S
authors.lastname: Grabar
authors.forename: Nathalie
authors.initials: N
authors.lastname: Mejean
authors.forename: Caroline
authors.initials: C
authors.lastname: Rey-Salmon
mesh_terms: D002648:Child; D002649:Child Abuse / Q000706:statistics & numerical data*; D002675:Child, Preschool; D006259:Craniocerebral Trauma / Q000453:epidemiology*; D005260:Female; D005554:Forensic Medicine; D005602:France; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012189:Retrospective Studies; D038642:Shaken Baby Syndrome / Q000453:epidemiology; D014342:Truth Disclosure