側頭部骨折の実験的研究

Experimental Studies of Skull Fracture in the Temporal Region

Ⅰ．はじめに

　頭蓋骨々折は種々の原因で起こるが，その原因によって，起こる頭部外傷は，ある一定のパターンをとることが多い．

　たとえば，交通事故もそうであるが，自動車の正面衝突でおこる頭蓋骨々折は，前頭部打撲によるものが大部分であり，これに関しては，当教室の益沢によって研究され，その結果は，既に，発表されている^11）．

These experimental studies of skull fractures in the temporal region were carried out in co-operation the Faculty of Engineering and the Department of Neurosurugery of Tokyo University. 15 dry human skulls were statically compressed in the bitemporal direction.

The results of our experiments are as follows:

1) The forces necessary to produce the first fracture (separations of the parietotemporal suture) are between 135 kg and 385 kg. (average: 258kg)

2) The forces necessary to produce the second fractures (true fractures) are between 195 kg and 550 kg. (average; 356.:3kg)