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Updated: Jul 13, 2026

Controlled Cortical Impact Model for Traumatic Brain Injury
Published on: August 5, 2014
The association of subcortical brain injury and abusive head trauma
Katelyn M Even1, Kent P Hymel1, Veronica Armijo-Garcia2
1Department of Pediatrics, Penn State College of Medicine, Penn State Health Children's Hospital, 600 University Drive, Hershey, PA 17033, USA.
Insights
Subcortical brain injury is strongly linked to abusive head trauma (AHT) in young children. This finding aids in diagnosing AHT, especially when combined with other injury indicators.
Area of Science:
- Pediatric Neuroimaging
- Child Abuse Pediatrics
- Forensic Pathology
Background:
- Abusive head trauma (AHT) presents significant diagnostic challenges in pediatrics.
- Prior research suggested a link between subcortical brain injury and AHT.
Purpose of the Study:
- To investigate the association between subcortical brain injury identified on neuroimaging and the diagnosis of AHT.
- To determine if subcortical injury is a reliable indicator in diagnosing abusive head trauma.
Main Methods:
- A secondary analysis of a de-identified, cross-sectional dataset was performed.
- Data included children under 3 years old with acute traumatic brain injury (TBI) admitted to 18 pediatric intensive care units (PICUs).
- Injury locations were categorized, with a focus on subcortical brain injury.
Main Results:
- Subcortical injury was significantly associated with AHT diagnoses, both by physician impression (OR: 8.41) and defined criteria (OR: 5.99).
- Children with subcortical injuries were more likely to have other traumatic injuries (e.g., rib fractures, retinal hemorrhages) and severe complications (e.g., respiratory compromise, seizures, encephalopathy).
- Caregiver reports inconsistent with the child's motor skills decreased as injury depth increased.
Conclusions:
- Subcortical injury is a key indicator associated with AHT diagnoses.
- The presence of subcortical injury, alongside other traumatic injuries and clinical signs, is crucial for the complex diagnostic process of AHT.
- This finding supports the consideration of subcortical injury as a significant component in evaluating suspected abusive head trauma.
Background:
Abusive head trauma (AHT) remains a major pediatric problem with diagnostic challenges. A small pilot study previously associated subcortical brain injury with AHT.
Objectives:
To investigate the association of subcortical injury on neuroimaging with the diagnosis of AHT.
Participants And Setting:
Children <3 years with acute TBI admitted to 18 PICUs between 2011 and 2021.
Methods:
Secondary analysis of existing, combined, de-identified, cross-sectional dataset.
Results:
Deepest location of visible injury was characterized as scalp/skull/epidural (n = 170), subarachnoid/subdural (n = 386), cortical brain (n = 170), or subcortical brain (n = 247) (total n = 973). Subcortical injury was significantly associated with AHT using both physicians' diagnostic impression (OR: 8.41 [95 % CI: 5.82-12.44]) and a priori definitional criteria (OR: 5.99 [95 % CI: 4.31-8.43]). Caregiver reports consistent with the child's gross motor skills and historically consistent with repetition decreased as deepest location of injury increased, p < 0.001. Patients with subcortical injuries were significantly more likely to have traumatic extracranial injuries such as rib fractures (OR 3.36, 95 % CI 2.30-4.92) or retinal hemorrhages (OR 5.97, 95 % CI 4.35-8.24), respiratory compromise (OR 12.12, 95 % CI 8.49-17.62), circulatory compromise (OR 6.71, 95 % CI 4.87-9.29), seizures (OR 3.18, 95 % CI 2.35-4.29), and acute encephalopathy (OR 12.44, 95 % CI 8.16-19.68).
Conclusions:
Subcortical injury is associated with a diagnosis of AHT, historical inaccuracies concerning for abuse, traumatic extracranial injuries, and increased severity of illness including respiratory and circulatory compromise, seizures, and prolonged loss of consciousness. Presence of subcortical injury should be considered as one component of the complex AHT diagnostic process.
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