小型猪不同类型髁突骨折对颞颌关节血流的影响  

Effect of different types of condylar fractures of the mandible on the blood flow of temporomandibular joint of childhood miniature pigs

作　　者：姚军[1] 胡敏[1] 周继林[1] 洪民[1] 

机构地区：[1]解放军总医院口腔科,北京100853

出　　处：《中国骨伤》2000年第11期655-657,共3页China Journal of Orthopaedics and Traumatology

摘　　要：目的　探讨不同类型髁突骨折后的血供变化。方法　中国实验用小型猪 15头 ,分别造成左侧髁突纵行和横断骨折模型 ,在不同时间进行放射同位素三相骨扫描检查。结果　不同类型髁突骨折后血流相时间 -放射性强度曲线均显示峰值升高 ,峰时后延 ,术侧颞颌关节区延迟相和血池相的放射性计数比值各个时间组均比健侧大 ,提示TMJ血流灌注受到影响 ,与髁突横断骨折比较 ,髁突纵行骨折后TMJ血流所受影响程度较大 ,时间较长。结论　放射性同位素三相骨扫描可反映出不同类型髁突骨折后在不同时间的骨代谢及血供情况 ,为临床提供非常有用的信息。WT5”BZ][HT5”H]Objective [HT5”SS]To evaluate the effect of different types of condylar fractures of the mandible on the blood flow of temporomandibular joint (TMJ)of childhood miniature pigs.[HT5”H]Methods [HT5”SS]Longitudinal and transverse fracture models of left condylar process of the mandible were produced in 15 childhood miniature pigs.The “three phrase technique” of radio nuclide skeletal imaging was performed on these pigs at different times.[HT5”H]Results [HT5”SS]The blood flow imaging and the values of the time-activity curve of the two types of condylar fractures showed a higher peak value and a delayed peak time on TMJ area at fracture side.Also,the value of radioactive count in blood pool and delayed image of TMJ area at fracture side was higher than that of control side,which reminded that blood flow perfusion of TMJ was affected.In comparison with transverse fracture of condyle process,TMJ blood flow was affected more extensively and longer after longitudinal fracture.[HT5”H]Conclusion [HT5”SS]The “three phrase technique” of radio nuclide skeletal imaging can provide useful information for post fracture recover process,in which the results reflect the situation of blood supply,skeletal metabolism and the recovery process at different periods following different types of fracture.There are severe injuries of longitudinal condylar process fracture on TMJ. [WT5”HZ]

关 键 词：颞颌关节 髁突骨折 同位素 血液供应 

分 类 号：R683[医药卫生—骨科学]