Morton A L, Khan A
Department of Otolaryngology-Head and Neck Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD.
Otolaryngol Head Neck Surg. 1991 Feb;104(2):204-9. doi: 10.1177/019459989110400208.
The third segment or pterygopalatine branch of the internal maxillary artery has variable branching in the pterygopalatine fossa. This variability in branching can lead to failure in controlling persistent nasal epistaxis by transantral ligation. Although the surgical approach has been previously studied, a systematic classification of this branching has not been previously reported. Through the performance of serial cadaver dissections in the PPF, we have demonstrated the anatomic course and variations of this third segment and offer a relatively simple classification system.
上颌内动脉的第三段或翼腭分支在翼腭窝内分支情况多变。这种分支的变异性可能导致经鼻窦结扎术控制持续性鼻出血失败。尽管此前已对该手术入路进行过研究，但此前尚未报道过这种分支的系统分类。通过对翼腭窝进行系列尸体解剖，我们展示了该第三段的解剖走行及变异情况，并提供了一个相对简单的分类系统。
