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目的：鼻内窥镜筛窦切除术时常出现眶内及颅内严重并发症，本研究为此类手术提供重要解剖数据，依此避免手术并发症的出现。方法：在６０个完整成人尸体头部标本上对鼻内窥镜下行筛窦切除术的应用解剖进行了研究，通过颅正中矢状切面、水平切面，设计了１１条测线、９个测角和５项观察。结果：①前鼻棘至手术有关重要解剖结构的距离及角度约分别为：钩突中部３５ｍｍ、４９°，筛泡中部３７ｍｍ、５２°，中鼻甲基板４３ｍｍ、５８°，筛板前部５０ｍｍ、７１°；②中鼻甲前端至蝶窦口距离为３５ｍｍ，中鼻甲前端顶部附着处为筛顶与筛板的分界；③中鼻道外侧壁（上颌窦内侧壁）与纸样板在同一垂直面。结论：中鼻甲是鼻内窥镜鼻窦切除术的重要内部标志，前鼻棘是此类手术的重要外部标志
Objective: Nasal endoscopic ethmoid sinus resection often presents with severe intraorbital and intracranial complications. This study provides important anatomical data for this type of surgery and thus avoids the occurrence of surgical complications. Methods: Applied anatomy of ethmoidectomy for nasal endoscopy was performed on 60 intact adult cadaver head specimens. Eleven measurement lines were designed through the median sagittal section and the horizontal section of the skull. Nine measurement angles And 5 observations. Results: ① The distances and angles between the anterior nasal spine and the important anatomic structures of the operation were approximately 35mm and 49 ° in the middle of the uncinate process, 37mm and 52 ° in the middle part of the middle follicle, 43mm and 58 ° in the middle turbinate, 50mm and 71 °; ② the distance from the anterior end of the middle turbinate to the sphenoid ostium is 35mm, the top of the middle turbinate adheres to the boundary of the sieve top and the sieve plate; ③ the lateral wall of the middle nasal canal (the medial wall of the maxillary sinus) is in the same vertical plane as the model of the paper. CONCLUSIONS: Middle turbinate is an important internal marker for nasal endoscopic sinus resection. Anterior nasal spikes are an important external sign of such surgery