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dc.contributor.authorStray-Pedersen, Arne
dc.contributor.authorStrisland, Frode
dc.contributor.authorRognum, Torleiv Ole
dc.contributor.authorHubertus Schiks, Luuk Antoon
dc.contributor.authorLoeve, Arjo J.
dc.identifier.citationNeurotrauma Reports. 2021, 2, (1), 224-231.en_US
dc.description.abstractViolent shaking is believed to be a common mechanism of injury in pediatric abusive head trauma. Typical intracranial injuries include subdural and retinal hemorrhages. Using a laboratory surrogate model we conducted experiments evaluating the head motion patterns that may occur in violent shaking. An anthropomorphic test device (ATD; Q0 dummy) matching an infant of 3.5 kg was assembled. The head interior was equipped with accelerometers enabling assessment of three-axial accelerations. Fifteen volunteers were asked to shake the surrogate vigorously holding a firm grip around the torso. We observed the volunteers performing manual shaking of the surrogate at a median duration of 15.5 sec (range 5–54 sec). Typical acceleration/deceleration patterns were produced after 2–3 shakes with a steady-state shaking motion at a pace of 4–6 cycles (back and forth) per second. Mean peak sagittal tangential accelerations at the vertex were 45.7g (range 14.2–105.1g). The acceleration component in the orthogonal direction, the radial acceleration, fluctuated around a negative mean of more than 4g showing that the surrogate head was continuously subjected to centripetal forces caused by rotations. This surrogate experiment showed that violent shaking may induce high peak tangential accelerations and concomitantly a continuous high-magnitude centripetal force. We hypothesize that the latter component may cause increased pressure in the subdural compartment in the cranial roof and may cause constant compression of the brain and possibly increased stretching or shearing of the bridging veins. This may contribute to the mechanism accountable for subdural hematoma in abusive head trauma.en_US
dc.publisherMary Ann Lieberten_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.subjectAbusive head traumaen_US
dc.subjectBiomechanical modelen_US
dc.subjectShaken babyen_US
dc.titleViolent Infant Surrogate Shaking: Continuous High-Magnitude Centripetal Force and Abrupt Shift in Tangential Acceleration May Explain High Risk of Subdural Hemorrhageen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holder© Arne Stray-Pedersen et al., 2021en_US
dc.source.journalNeurotrauma Reportsen_US

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal