STUDY ON THE MICROSTRUCTURES OF SKULL FRACTURE
- VernacularTitle:颅骨骨折断面细微结构的观察研究
- Author:
Zhijin ZUO
;
Jiazhen ZHU
;
- Publication Type:Journal Article
- Keywords:
Skull fracture;
Scanning electron microscope;
Microstructures Ante-and post-mortem fractures
- From:
Chinese Journal of Forensic Medicine
1986;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Having collected the skull of a fallen adult victim,and made artificial fractures on an autopsled adult skull as well as on two living dog skulls,we observed the edges of skull fractures under the scanning electron microscope in order to find out the submicroscopic morphologic features of skull fractures aiming at elucidating the mechanism of fracture,and differentiating ante-from post-mortem fractures.Many microfractures were found along the main fracture lines,they extended into the interior of the skull. The width of the microfractures varied from 5 to 100?m.Some of them were located in the external compact bone and some between the outer compact bone and diploe. The rest were found in the diploe in the form of transverse,longitudinal or spiral fractures of bony trabeculae.Collagenous fibre bunches embeded in the bony matrix were broken and separated. The blood vessels inside the skull were crosscut or longitudinary torn by the fracture lines. Sometimes the torn blood vessels were pulled out of the Harversian canals.In antemortem fractures as a results of hemorrhage, there were not only blood clot on the edges of the broken skull, but also hemorrhage into the microfractures. The fibrin networks and red blood cells were easily found in the depths of these cracks.A deductive mechanism of formation of the microfractures and the possibility of differentiation between ante-and post-mortem fractures are discussed.
