Associated XXXX and mechanism of @entity3029 caused by @entity130 .

@entity1 @entity4215 @entity174 @entity510 @entity548 @entity1661 @entity1620 @entity1410 @entity764 @entity1576 @entity1167 @entity1317 @entity204 @entity9807 @entity130 @entity3029
Injuries associated with @entity130 ( @entity3029 ) leading to @entity204 were analyzed in 11 @entity1 , nine injured by traffic accidents, of which five were victims of car-pedestrian accidents. On admission, unconsciousness and @entity1576 were noted in all @entity1 , and @entity1167 in nine. Skull and cervical roentgenograms revealed enlargement of the retropharyngeal space due to @entity1317 or its branches in nine @entity1 , @entity9807 (C-1-C-2 separation) in four, and skull @entity174 in four. Computed tomography demonstrated @entity510 ( @entity510 ) in the upper cervical and posterior fossa in nine @entity1 , fourth ventricular @entity1410 in seven, and @entity174 in three. @entity510 and ventricular @entity1410 were due to @entity4215 . Other common @entity130 were @entity130 and head excluding the mandibular region in 10 @entity1 , mandibular @entity174 in three, severe @entity764 in eight, and intraperitoneal @entity548 in two. The overall outcome was poor. Nine @entity1 died within 13 hours of admission, one was diagnosed as @entity1620 8 days after the accident, and the other one survived in a persistent vegetative state. Early @entity204 is probably caused by associated severe @entity130 , i.e. @entity764 and intraperitoneal @entity548 rather than @entity3029 . Although injury of the mandibular region is known to be associated with @entity3029 , head, breast, and @entity1661 may also lead to neck hyperextension-flexion in various directions. Whatever the direct cause, a distractive force to the craniocervical joint by hyperextension-flexion appears to be important in the mechanism of @entity3029 .
