頭蓋骨欠損のある患者の頭部外傷—2症例報告

Blunt Injury on the Craniectomized Head: Report of two cases

I．はじめに

　一般に急性期頭部外傷の臨床はそのメカニズムも病理も"cranium is a rigid box completely filled with incompressible contents"（Alexander Monro secundus，1783）^10）という特性のもとに検索される．しかしながら頭蓋が一部欠損した状況下での頭部外傷の臨床観察は，渉猟しえたかぎり報告はなされていない．われわれは脳腫瘍術後の外減圧開頭状態にある2例の対照的経過をとった頭部外傷例を経験したので報告し，若干の考察を加える．

The mechanism of impact head injuries has generallybeen discussed on the basis of the cranium is a rigidbox completely filled with incompressible contents.In this paper, two cases of head injuries in patients withsevere craniectomized skull defects are reported andtheir conditions are discussed.

The 1st case was a 46 year-old female with a largefrontoparietal skull defect following surgery on abrain tumor. While hospitalized, she fell down fromher bed (50 cm in height) and suffered strong impacton the craniectomized area.