临床上下颌骨骨折各部位发生的频度依次为髁状突颈(以下简称“髁颈”)、下颌体、下颌角、颏部、下颌升枝,偶尔也可见啄突基部。髁颈部骨折最常见的原因是下颁骨颏部外伤,外力间接传导至髁颈部而发生。对以上临床现象的发生原因和机制的实验分析尚未见报道。我们通过对下颌骨实物进行模拟模型光弹性实验,观察其 The frequencies of clinical mandibular fractures were condylar neck (hereinafter referred to as “condylar neck”), mandibular body, mandibular angle, chin, mandibular ascending, and occasionally pecking base. The most common cause of condylar neck fracture is under the promulgation of bone chin injury, external conduction indirectly to the condylar neck and occur. The above clinical analysis of the causes and mechanisms of experimental analysis has not been reported. We simulate the model of the mandible by photoelastic experiments to observe it