Observations on prediction of fracture site in head injury.
Observations on prediction of fracture site in head injury.
复制标题
颅脑损伤骨折部位预测的观察。
作者：
E. S. Gurdjian;J. E. Webster;H. R. Lissner
在以前的论文中，关于撞击后颅骨变形的研究被报道(1，2，3)。结果是通过在颅骨内外表面涂抹应变敏感漆(应力记分器)获得的。当底层骨中产生足够的拉应力时，漆层中就会出现裂纹。漆外层的这种裂纹是由于外弯造成的，而出现在头骨内侧的裂纹是由于内弯造成的。先前报道的还有(4)一项实验研究，该研究表明，对于变形模式的确定，使用新鲜干燥的人类头骨可以获得可靠的结果。在撞击之后，在撞击点的正下方和周围总是有一个不弯曲的区域。如果能量充足，如果速度足够高，这个不弯曲的区域可能会失效，导致凹陷的骨折。如果内弯不够严重，不足以在内陷区域的边界造成骨折，头骨就会反弹。不屈不挠的阿博。
In previous papers, studies of deformations of the skull following impact were reported (1, 2, 3). Results were obtained by applying a strain-sensitive lacquer (stresscoat) to the external and internal surfaces of the skull. Cracks appear in the lacquer when adequate tensile stresses occur in the underlying bone. Such cracks on the outer coating of lacquer result from outbending; those appearing on the inside of the skull are due to inbending. Previously reported also was (4) an experimental study which showed that, for the determination of deformation patterns, reliable results are obtained with the use of freshly dried human skulls. Following impact there is always an area of inbending immediately beneath and around the point of the blow. If the energy is adequate and if the velocity is sufficiently high, this area of inbending may fail, resulting in a depressed fracture. If the inbending is not severe enough to cause a fracture at the boundary of the inbended area, the skull rebounds. The inbending abo...