Type

Journal Article

Authors

Shawn Marshall
Michael Cusimano
Susan Brien
Michael D. Gilchrist
T B Hoshizaki
Andrew Post

Subjects

Psychiatry

Topics
finite element brain injuries traumatic brain injury tbi influence subarachnoid hemorrhage subdural hematoma head impact risk factor

Traumatic brain injuries: the influence of the direction of impact. (2014)

Abstract Head impact direction has been identified as an influential risk factor in the risk of traumatic brain injury (TBI) from animal and anatomic research; however, to date, there has been little investigation into this relationship in human subjects. If a susceptibility to certain types of TBI based on impact direction was found to exist in humans, it would aid in clinical diagnoses as well as prevention methods for these types of injuries. To examine the influence of impact direction on the presence of TBI lesions, specifically, subdural hematomas, subarachnoid hemorrhage, and parenchymal contusions. Twenty reconstructions of falls that resulted in a TBI were conducted in a laboratory based on eyewitness, interview, and medical reports. The reconstructions involved impacts to a Hybrid III anthropometric dummy and finite element modeling of the human head to evaluate the brain stresses and strains for each TBI event. The results showed that it is likely that increased risk of incurring a subdural hematoma exists from impacts to the frontal or occipital regions, and parenchymal contusions from impacts to the side of the head. There was no definitive link between impact direction and subarachnoid hemorrhage. In addition, the results indicate that there is a continuum of stresses and strain magnitudes between lesion types when impact location is isolated, with subdural hematoma occurring at lower magnitudes for frontal and occipital region impacts, and contusions lower for impacts to the side. This hospital data set suggests that there is an effect that impact direction has on TBI depending on the anatomy involved for each particular lesion.
Collections Ireland -> University College Dublin -> PubMed

Full list of authors on original publication

Shawn Marshall, Michael Cusimano, Susan Brien, Michael D. Gilchrist, T B Hoshizaki, Andrew Post

Experts in our system

1
Shawn Marshall
University College Dublin
Total Publications: 5
 
2
Michael D Cusimano
University College Dublin
Total Publications: 6
 
3
Susan Brien
University College Dublin
Total Publications: 5
 
4
M. D. Gilchrist
University College Dublin
Total Publications: 172
 
5
Thomas Blaine Hoshizaki
University College Dublin
Total Publications: 31
 
6
Andrew Post
University College Dublin
Total Publications: 29