Examination of the relationship between peak linear and angular accelerations to brain deformation metrics in hockey helmet impacts

Andrew Post, Anna Oeur, Blaine Hoshizaki and Michael D. Gilchrist

Computer Methods in Biomechanics and Biomedical Engineering, 2013, vol. 16, issue 5, 511-519

Abstract: Ice hockey is a contact sport which has a high incidence of brain injury. The current methods of evaluating protective devices use peak resultant linear acceleration as their pass/fail criteria, which are not fully representative of brain injuries as a whole. The purpose of this study was to examine how the linear and angular acceleration loading curves from a helmeted impact influence currently used brain deformation injury metrics. A helmeted Hybrid III headform was impacted in five centric and non-centric impact sites to elicit linear and angular acceleration responses. These responses were examined through the use of a brain model. The results indicated that when the helmet is examined using peak resultant linear acceleration alone, they are similar and protective, but when a 3D brain deformation response is used to examine the helmets, there are risks of brain injury with lower linear accelerations which would pass standard certifications for safety.

Date: 2013
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DOI: 10.1080/10255842.2011.627559

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