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Accuracy of Instrumented Mouthguards During Direct Jaw Impacts Seen in Boxing.

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Title: Accuracy of Instrumented Mouthguards During Direct Jaw Impacts Seen in Boxing.
Authors: Venkatraman, Jay1 (AUTHOR) jay.venkatraman@wayne.edu, Abrams, Mitchell Z.2 (AUTHOR), Sherman, Donald1 (AUTHOR), Ortiz-Paparoni, Maria2 (AUTHOR), Bercaw, Jefferson R.2 (AUTHOR), MacDonald, Robert E.1 (AUTHOR), Kait, Jason2 (AUTHOR), Dimbath, Elizabeth2 (AUTHOR), Pang, Derek2 (AUTHOR), Gray, Alexandra2 (AUTHOR), Luck, Jason F.2 (AUTHOR), Bass, Cameron R.1,2 (AUTHOR), Bir, Cynthia A.1 (AUTHOR)
Source: Annals of Biomedical Engineering. Dec2024, Vol. 52 Issue 12, p3219-3227. 9p.
Subjects: Linear acceleration, Angular acceleration, Skull base, Sports injuries, Center of mass
Abstract: Purpose: Measuring head kinematics data is important to understand and develop methods and standards to mitigate head injuries in contact sports. Instrumented mouthguards (iMGs) have been developed to address coupling issues with previous sensors. Although validated with anthropomorphic test devices (ATDs), there is limited post-mortem human subjects (PMHS) data which provides more accurate soft tissue responses. This study evaluated two iMGs (Prevent Biometrics (PRE) and Diversified Technical Systems (DTS) in response to direct jaw impacts. Methods: Three unembalmed male cadaver heads were properly fitted with two different boil-and-bite iMGs and impacted with hook (4 m/s) and uppercut (3 m/s) punches. A reference sensor (REF) was rigidly attached to the base of the skull, impact kinematics were transformed to the head center of gravity and linear and angular kinematic data were compared to the iMGs including Peak Linear Acceleration, Peak Angular Acceleration, Peak Angular Velocity, Head Injury Criterion (HIC), HIC duration, and Brain Injury Criterion. Results: Compared to the REF sensor, the PRE iMG underpredicted most of the kinematic data with slopes of the validation regression line between 0.72 and 1.04 and the DTS overpredicted all the kinematic data with slopes of the regression line between 1.4 and 8.7. Conclusion: While the PRE iMG was closer to the REF sensor compared to the DTS iMG, the results did not support the previous findings reported with use of ATDs. Hence, our study highlights the benefits of using PMHS for validating the accuracy of iMGs since they closely mimic the human body compared to any ATD's mandible. [ABSTRACT FROM AUTHOR]
Copyright of Annals of Biomedical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Accuracy of Instrumented Mouthguards During Direct Jaw Impacts Seen in Boxing.
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  Data: <searchLink fieldCode="AR" term="%22Venkatraman%2C+Jay%22">Venkatraman, Jay</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jay.venkatraman@wayne.edu</i><br /><searchLink fieldCode="AR" term="%22Abrams%2C+Mitchell+Z%2E%22">Abrams, Mitchell Z.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sherman%2C+Donald%22">Sherman, Donald</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ortiz-Paparoni%2C+Maria%22">Ortiz-Paparoni, Maria</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bercaw%2C+Jefferson+R%2E%22">Bercaw, Jefferson R.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22MacDonald%2C+Robert+E%2E%22">MacDonald, Robert E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kait%2C+Jason%22">Kait, Jason</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dimbath%2C+Elizabeth%22">Dimbath, Elizabeth</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pang%2C+Derek%22">Pang, Derek</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gray%2C+Alexandra%22">Gray, Alexandra</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luck%2C+Jason+F%2E%22">Luck, Jason F.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bass%2C+Cameron+R%2E%22">Bass, Cameron R.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bir%2C+Cynthia+A%2E%22">Bir, Cynthia A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Annals+of+Biomedical+Engineering%22">Annals of Biomedical Engineering</searchLink>. Dec2024, Vol. 52 Issue 12, p3219-3227. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Linear+acceleration%22">Linear acceleration</searchLink><br /><searchLink fieldCode="DE" term="%22Angular+acceleration%22">Angular acceleration</searchLink><br /><searchLink fieldCode="DE" term="%22Skull+base%22">Skull base</searchLink><br /><searchLink fieldCode="DE" term="%22Sports+injuries%22">Sports injuries</searchLink><br /><searchLink fieldCode="DE" term="%22Center+of+mass%22">Center of mass</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose: Measuring head kinematics data is important to understand and develop methods and standards to mitigate head injuries in contact sports. Instrumented mouthguards (iMGs) have been developed to address coupling issues with previous sensors. Although validated with anthropomorphic test devices (ATDs), there is limited post-mortem human subjects (PMHS) data which provides more accurate soft tissue responses. This study evaluated two iMGs (Prevent Biometrics (PRE) and Diversified Technical Systems (DTS) in response to direct jaw impacts. Methods: Three unembalmed male cadaver heads were properly fitted with two different boil-and-bite iMGs and impacted with hook (4 m/s) and uppercut (3 m/s) punches. A reference sensor (REF) was rigidly attached to the base of the skull, impact kinematics were transformed to the head center of gravity and linear and angular kinematic data were compared to the iMGs including Peak Linear Acceleration, Peak Angular Acceleration, Peak Angular Velocity, Head Injury Criterion (HIC), HIC duration, and Brain Injury Criterion. Results: Compared to the REF sensor, the PRE iMG underpredicted most of the kinematic data with slopes of the validation regression line between 0.72 and 1.04 and the DTS overpredicted all the kinematic data with slopes of the regression line between 1.4 and 8.7. Conclusion: While the PRE iMG was closer to the REF sensor compared to the DTS iMG, the results did not support the previous findings reported with use of ATDs. Hence, our study highlights the benefits of using PMHS for validating the accuracy of iMGs since they closely mimic the human body compared to any ATD's mandible. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Annals of Biomedical Engineering is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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