Biomechanical analysis of acute subdural hematoma resulting from judo
Biomechanical analysis of acute subdural hematoma resulting from judo
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DOI：
10.2220/biomedres.35.339
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发表时间：
2014-10-01
影响因子：
1.2
通讯作者：
Koyama, Katsuhiro
中科院分区：
文献类型：
--
作者：
Hitosugi, Masahito;Murayama, Haruo;Koyama, Katsuhiro
本研究旨在探讨柔道致急性硬膜下血肿的生物力学机制，并寻求预防措施以减少损伤。一位日本柔道专家使用Osoto-gari和Ouchi-gari两种投掷技术反复投掷人体测量测试装置。测量了头部的线加速度和角加速度。两种投掷技术都导致假人向后摔倒，头部的枕部区域接触垫子，并且当头部接触垫子时观察到峰值线性和角加速度。对于线性加速度，前后方向显示出最大的力（使用Osoto-gari时为41.0 +/- 2.6 G，使用Ouchi-gari时为86.5 +/- 4.3 G）。对于角加速度，矢状面旋转的值在测量的三个方向中最大（Osoto-gari为3315 +/- 168 rad/s（2），Ouchi-gari为1328 +/- 201 rad/s（2））。我们得出结论，枕部接触产生了最有力的纵向线性和矢状面角加速度;随后的桥旁桥静脉拉伸和破裂导致急性硬膜下血肿。由于如果一个人的头部与垫子接触可能会导致严重的头部受伤，进攻性投掷技术应限于能够充分展示Ukemi技术的参与者。
This study investigated biomechanical mechanisms of acute subdural hematoma caused by judo and sought preventive measures to reduce injury. A Japanese judo expert repeatedly threw an anthropometric test device using two throwing techniques, Osoto-gari and Ouchi-gari. Linear and angular accelerations of the head were measured. Both throwing techniques resulted in the dummy falling backwards, with the occipital area of the head contacting the mat, and peak linear and angular accelerations being observed when the head contacted the mat. For linear acceleration, the posterior anterior direction showed the greatest force (41.0 +/- 2.6 G using Osoto-gari, and 86.5 +/- 4.3 G using Ouchi-gari). For angular acceleration, values for sagittal plane rotation were greatest among the three directions measured (3315 +/- 168 rad/s(2) using Osoto-gari, and 1328 +/- 201 rad/s(2) using Ouchi-gari). We concluded that occipital head contact produced the most forceful longitudinal linear and sagittal plane angular accelerations; subsequent stretches and ruptures of parasagittal bridging veins resulting in acute subdural hematoma. As severe head injuries can result if a person's head comes into contact with the mat, offensive throwing techniques should be restricted to participants able to sufficiently demonstrate the Ukemi technique.