Accuracy of Instrumented Mouthguards During Direct Jaw Impacts Seen in Boxing

IF 3 2区 医学 Q3 ENGINEERING, BIOMEDICAL
Jay Venkatraman, Mitchell Z. Abrams, Donald Sherman, Maria Ortiz-Paparoni, Jefferson R. Bercaw, Robert E. MacDonald, Jason Kait, Elizabeth Dimbath, Derek Pang, Alexandra Gray, Jason F. Luck, Cameron R. Bass, Cynthia A. Bir
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引用次数: 0

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 Image

拳击比赛中颚骨直接撞击时仪器护齿的准确性。
目的:测量头部运动学数据对于了解和制定减轻接触性运动中头部伤害的方法和标准非常重要。目前已开发出仪器式护齿(iMG),以解决以往传感器的耦合问题。虽然已通过拟人测试装置(ATD)的验证,但提供更准确软组织反应的死后人体(PMHS)数据有限。本研究评估了两种 iMG(Prevent Biometrics (PRE) 和 Diversified Technical Systems (DTS))对下颌直接撞击的反应:方法:将三个未失衡的男性尸体头部与两种不同的沸腾咬合 iMG 适当安装,并用钩拳(4 米/秒)和上勾拳(3 米/秒)进行撞击。参考传感器(REF)被固定在头骨底部,撞击运动学被转换到头部重心,线性和角度运动学数据与 iMGs 进行比较,包括峰值线性加速度、峰值角加速度、峰值角速度、头部损伤标准(HIC)、HIC 持续时间和脑损伤标准:与 REF 传感器相比,PRE iMG 对大部分运动学数据的预测偏低,验证回归线的斜率在 0.72 和 1.04 之间,而 DTS 对所有运动学数据的预测偏高,回归线的斜率在 1.4 和 8.7 之间:虽然与 DTS iMG 相比,PRE iMG 更接近 REF 传感器,但结果并不支持之前报告的使用 ATD 的结果。因此,我们的研究强调了使用 PMHS 验证 iMG 准确性的好处,因为与任何 ATD 下颌骨相比,PMHS 更接近人体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Annals of Biomedical Engineering
Annals of Biomedical Engineering 工程技术-工程:生物医学
CiteScore
7.50
自引率
15.80%
发文量
212
审稿时长
3 months
期刊介绍: Annals of Biomedical Engineering is an official journal of the Biomedical Engineering Society, publishing original articles in the major fields of bioengineering and biomedical engineering. The Annals is an interdisciplinary and international journal with the aim to highlight integrated approaches to the solutions of biological and biomedical problems.
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