【正文】
1 cases of bicycle crashed by motor vehicle in side,it leadsto extremities fractures in 62 cases,craniocerebral injury in 74 cases,and viscera rupture in 7 cases,in which 74 cases died ofcraniocerebral injury and 7 cases died of hemorrhagic shock induced by viscera rupture. There were 31 cases of riding bicyclecrashed by motor vehicle behind,it leads to extremities fractures in 8 cases,craniocerebral injury in 27 cases,and viscera rupture in 6 cases,in which 25 cases died of craniocerebral injury,4 cases died of hemorrhagic shock induced by viscera rupture,and 2 cases died of craniocerebral injury bined with hemorrhagic shock. There were 7 cases of walking bicycle crashed bymotor vehicle,it leads to extremities fractures in 6 cases,craniocerebral injury in 6 cases,and viscera rupture in 4 cases,inwhich 4 cases died of craniocerebral injury,2 cases died of hemorrhagic shock induced by viscera rupture,and 2 cases died ofcraniocerebral injury bined with hemorrhagic shock. There were 2 cases of bicycle crashed into bicycle,it leads to extremities fractures in 1 cases,craniocerebral injury in 2 cases,and all died of craniocerebral injury. Conclusion Bicycle and motorvehicle collision is the most mon and most serious type of bicycle acc