70例对冲性颅底骨折分析

ANALYSIS OF 70 CASES OF CONTRE-COUP FRACTURES OF THE BASE OF SKULL

作者对70例头部损伤引起的对冲性颅底骨折进行了分析.认为在骨质菲薄部位,如眶板、筛板及蝶骨翼等处出现孤立性线状或粉碎性骨折,系由于头部受钝性暴力作用,于着力点的对侧被眼球或脑的加速运动撞击造成;在对冲性颅底骨折的相应部位的脑组织出现严重的对冲性脑挫伤,系由于该部脑组织加速运动撞击形成;二者是相互作用的结果.其它部位的对冲性颅底骨折主要是由于颅底部突出部分的反作用力造成.

70 case reports are presented. An analysis is made on cranial base contre-coup opposite to the point of impact. This may take place as a result of either deceleration or acceleration impacts on the skull, more frequently on cranial fossa anterior,less on cranial fossa middle and seldom on cranial fossa posterior. Mechanisms vary as to their occurrence.The author attributes the isolated linear or communitive factures on the thin,unsupported or isolated parts, such as orbital bone, ethmoid bone, splonoidal ala etc. to the accelerative impact caused by eyeballs or brain which are on the other side following violence directed on the head. Serious contre-coup contusions of the brain may be in correspondence with the contre-coup fractures caused by the brain tissue accelerated on the cranial base,hence,a result of interaction. Others are mainly at ributed to the supportive inertia exerted by the cranial base.