颅缝的微观生物力学及其临床意义

本文通过尸颅颅缝的光镜和扫描电镜观察,探讨颅缝微观结构的力学特性,评估其在颅脑外伤中的价值.胶原纤维是构成颅缝的主要承力结构.它们按一定方向分布,部分使骨间结合更牢固,部分对抗骨间过度靠拢.颅缝能维持自身宽度,可防止骨间融合及缓冲外力作用.头部受暴力时,胶原纤维的连结可吸收一定能量,使压力波传播衰减,有利于减轻脑损伤.颅缝这种薄壳结构因缝连结的存在增强了脑保护的能力.老年人骨缝骨化,是容易发生脑损伤的因素之一.

Micro-biomechanics of Cranial Sutures and Its Clinical Significance

We studied the mechanical mechanism of cranial sutures by means of light microscopy and electron scanning microscopy. Being primary mechanical units in cranial sutures, collagen fibrils run between bones in regular directions. Some of them strengthen the connection between bones, and others prevent the bones from closing up. There is a mechanism keeping their own width in the sutures, which can prevent the bones from mixing together and buffer the outer force. When the head is impacted, the fibril structure absorbs some energy, so the spreading of force wave would be attenuated and the brain injury reduced. The fibril structures play a fairly good role in safeguarding brain.