Concussions are among the most common injuries sustained by goaltenders. Concussive injuries are characterized by impairment to neurological function which can affect many different brain regions. Understanding how different impact loading conditions (event type and impact site) affect the brain tissue response may help identify what kind of impacts create a high risk of injury to specific brain regions. The purpose of this study was to examine the influence of different impact conditions on the distribution of brain strain for ice hockey goaltender impacts. An instrumented headform was fitted with an ice hockey goaltender mask and impacted under a protocol which was developed using video analysis of real world ice hockey goaltender concussions for three different impact events (collision, puck, and fall). The resulting kinematic response served as input into the University College Dublin Brain Trauma Model (UCDBTM), which calculated maximum principal strain (MPS) in the cerebrum. Strain subsets were then determined and analyzed. Resulting peak strains (0.124–0.328) were found to be within the range for concussion reported in the literature. The results demonstrated that falls and collisions produced larger strain subsets in the cerebrum than puck impacts which is likely a reflection of longer impact duration for falls and collisions than puck impacts. For each impact event, impact site was also found to produce strain subsets of varying size and configuration. The results of this study suggest that the location and number of brain regions which can be damaged depend on the loading conditions of the impact.
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December 2018
Research-Article
Distribution of Brain Strain in the Cerebrum for Laboratory Impacts to Ice Hockey Goaltender Masks
J. Michio Clark,
J. Michio Clark
School of Mechanical and Materials Engineering,
University College Dublin,
Belfield,
Dublin 4, Ireland;
University College Dublin,
Belfield,
Dublin 4, Ireland;
School of Human Kinetics,
University of Ottawa,
200 Lees Avenue, Room A106,
Ottawa, ON K1N 6N5, Canada
e-mail: michio.clark@ucd.ie
University of Ottawa,
200 Lees Avenue, Room A106,
Ottawa, ON K1N 6N5, Canada
e-mail: michio.clark@ucd.ie
Search for other works by this author on:
Andrew Post,
Andrew Post
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada;
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada;
Division of Neurosurgery,
St. Michael's Hospital,
Toronto, ON M5B 1W8, Canada
St. Michael's Hospital,
30 Bond Street
, Toronto, ON M5B 1W8, Canada
Search for other works by this author on:
T. Blaine Hoshizaki,
T. Blaine Hoshizaki
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada
Search for other works by this author on:
Michael D. Gilchrist
Michael D. Gilchrist
School of Mechanical and Materials Engineering,
University College Dublin,
Belfield,
Dublin 4, Ireland;
University College Dublin,
Belfield,
Dublin 4, Ireland;
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada
Search for other works by this author on:
J. Michio Clark
School of Mechanical and Materials Engineering,
University College Dublin,
Belfield,
Dublin 4, Ireland;
University College Dublin,
Belfield,
Dublin 4, Ireland;
School of Human Kinetics,
University of Ottawa,
200 Lees Avenue, Room A106,
Ottawa, ON K1N 6N5, Canada
e-mail: michio.clark@ucd.ie
University of Ottawa,
200 Lees Avenue, Room A106,
Ottawa, ON K1N 6N5, Canada
e-mail: michio.clark@ucd.ie
Andrew Post
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada;
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada;
Division of Neurosurgery,
St. Michael's Hospital,
Toronto, ON M5B 1W8, Canada
St. Michael's Hospital,
30 Bond Street
, Toronto, ON M5B 1W8, Canada
T. Blaine Hoshizaki
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada
Michael D. Gilchrist
School of Mechanical and Materials Engineering,
University College Dublin,
Belfield,
Dublin 4, Ireland;
University College Dublin,
Belfield,
Dublin 4, Ireland;
School of Human Kinetics,
University of Ottawa,
Ottawa, ON K1N 6N5, Canada
University of Ottawa,
200 Lees Avenue, Room A106
, Ottawa, ON K1N 6N5, Canada
1Corresponding author.
Manuscript received January 23, 2018; final manuscript received June 13, 2018; published online September 25, 2018. Assoc. Editor: Barclay Morrison.
J Biomech Eng. Dec 2018, 140(12): 121007 (10 pages)
Published Online: September 25, 2018
Article history
Received:
January 23, 2018
Revised:
June 13, 2018
Citation
Michio Clark, J., Post, A., Blaine Hoshizaki, T., and Gilchrist, M. D. (September 25, 2018). "Distribution of Brain Strain in the Cerebrum for Laboratory Impacts to Ice Hockey Goaltender Masks." ASME. J Biomech Eng. December 2018; 140(12): 121007. https://doi.org/10.1115/1.4040605
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