The animals of Groups A, B and C respectively represented single fracture, multiple fractures and severe maxillofacial injury associated with brain and eye injury.

• 形态学改变低速和中速致伤组 (A和 B组 )主要以局部损伤为主 ；高速致伤组 (C组 )则同时合并颅脑损伤和眼损伤 .