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Adjacent apparatus injury of maxillofacial impact
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 8
- DOI:
- 10.3321/j.issn:1000-2790.2000.08.003
- Key Word:
- 颌面部;创伤和损伤;生物力学;撞击
Abstract： 目的了解颌面部撞击伤合并视网膜、视神经及颅脑伤的损伤特点,探讨颌面部撞击伤邻近器官损伤的发生机制.方法采用水平气动式撞击机分别以(4.77±0.53)m.s-1(A组),(9.16±0.65)m.s-1(B组)和(13.95±0.67)m.s-1(C组)的不同速度对兔左侧面中部进行撞击(n=6).观察致伤后动物的生命体征的变化,并对颌面部软组织、眼、脑等邻近组织进行损伤的大体和光、电镜观察,同时记录致伤瞬间脑内压力和头颅冲击加速度.结果形态学改变低速和中速致伤组(A和B组)主要以局部损伤为主,高速致伤组(C组)则同时合并颅脑损伤和眼损伤.加速度、颅内压峰值C组均明显高于A,B两组(P<0.05).结论致伤瞬间头颅冲击加速度响应和脑内压力变化是造成颌面部撞击伤合并邻近器官损伤的重要生物力学因素.
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