方法：回顾分析113例面中部骨折的临床资料，治疗了鼻骨、颧弓、视神经损伤及颧上颌骨骨折。
Methods:113 cases of midface fractures were reviewed. The nasal bone fracture, zygomatic arch fracture, optic nerve contusion, zygomatic maxilla fracture were treated.
目的：通过对面神经颞支和颧支的解剖定位为眼科手术麻醉眼轮匝肌提供解剖学基础。
Objective: to provide anatomical foundation for the anesthesia of orbicular muscle of eye by locating the temporal branches and zygomatic branches of facial nerve.
结论：以牙槽孔至颧下嵴起始部的弧长和弦长为标准弯制注射针头，采用口内注射法进行上牙槽后神经阻滞麻醉，成功率为98％。
Conclusion: We use L as arch length and H as chord length to bend syringe needle that is used to posterior superior alveolar nerve block anesthesia by intraoral injection. The success rate is 98%.
结论：以牙槽孔至颧下嵴起始部的弧长和弦长为标准弯制注射针头，采用口内注射法进行上牙槽后神经阻滞麻醉，成功率为98％。
Conclusion: We use L as arch length and H as chord length to bend syringe needle that is used to posterior superior alveolar nerve block anesthesia by intraoral injection. The success rate is 98%.
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