Comparison of dynamic versus static head impact reconstruction methodology by means of dynamic impact response and brain deformation metrics

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Kendall, Marshall¹; Post, Andrew²; Zanetti, Katrina²; Hoshizaki, Thomas Blaine²; Gilchrist, Michael D.^2,3

Comparison of dynamic versus static head impact reconstruction methodology by means of dynamic impact response and brain deformation metrics

Proceedings of the 2013 International IRCOBI Conference on the Biomechanics of Injury

Affiliations

¹Impact Science Laboratory, University of Ottawa, Canada

²Neurotrauma Impact Science Laboratory, University of Ottawa, Canada

³University College Dublin, Ireland
Abstract and keywords

Current reconstructions of head impacts in sports utilize systems which involve a static headform. Many impacts in sport, such as football and ice hockey, typically involve two bodies colliding at velocities in different directions. As a result, current reconstruction techniques using a static component may not fully represent the actual impact event and thus produce different headform responses. Therefore, the purpose of this study is to compare the dynamic impact response and brain deformation metrics from two distinct impact reconstruction methods: 1) static headform (no neckform) and 2) dynamic headform (no neckform). The results of this study show differences between the two impact methodologies in terms of the three‐dimension dynamic response loading curves and peak MPS. These differences are likely due to differences in characteristics of dynamic response time‐history curves driving the finite element model producing higher strain within the brain tissue. This study emphasizes the importance of accurate impact reconstructions to better assess head injury mechanisms. This study may provide useful insight into the development of specific impact reconstruction methodologies for more accurate predictions of brain injury risks.

Keywords: impact reconstruction, brain injuries, brain deformation, dynamic response
Links

URL: http://www.ircobi.org/downloads/irc13/pdf_files/58.pdf

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Cited By (3)

Year	Entry
2016	Taylor K, Hoshizaki TB, Hoshizaki TB, Gilchrist MD. Dynamic head response and maximum principal tissue strain for helmeted (American football) and non‐helmeted impacts. In: Proceedings of the 2016 International IRCOBI Conference on the Biomechanics of Injury. September 14-16, 2016; Malaga, Spain.217-227.
2014	Rousseau P. Analysis of Concussion Metrics of Real-World Concussive and Non-Injurious Elbow and Shoulder to Head Collisions in Ice Hockey [PhD thesis]. University of Ottawa; 2014.
2018	Taylor K. The Use of Decoupling Structures in Helmet Liners to Reduce Maximum Principal Brain Tissue Strain for Head Impacts [PhD thesis]. University of Ottawa; 2018.