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《Chinese Journal of Critical Care Medicine》 2003-01
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Study on the discal injury of temporo-mandibular joint caused by combined injuries of blast waves and high velocity projectiles in maxillofacial regions

LIU Gui-cai,WANG Zhao-ling,ZHOU Shu-xia,et al.Department of Oral and Maxillofacial Surgery,Stomatological College,the Fourth Military Medical University,Xi′an 710032,China  
Objective To study the injury of articular disc of temporo- mandibular joint of the wounded side caused by combined injuries of blast waves and high velocity projectiles in maxillofacial regions.Methods The animals were wounded in the same maxillofacial region by the blast waves and high velocity projectiles at the same time.The distance from the explosives to mandible was 10 centimeters,and the distance that the projectiles travelled was 6 meters.The disc was resected and processed after 6 hours. The sample was examined by light microscope.Results All the animals were seriously damaged on the left face.Open wound was seen,and the splintered fracture of maxilla and mandible as well as zygoma in some animals was found.No active bleeding was found.Laceration and bleeding of the articular disc were observed.The synovium of joint was torn apart.The collagen fibers of articular disc were edematous.Acute inflammation along the articular capsule and adjacent soft tissues was evidently found.Conclusions The TMJ could be injured in this animal model of wound.More attention must be paid to patients suffering from this kind of injury.
【Fund】: 全军“十五”医药卫生指令性课题资助项目 ( 0 1L0 75)
【CateGory Index】: R782.4
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