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目的:探讨泪骨在泪囊鼻腔吻合术中的重要意义。方法:测量10具(男5具,女5具)成人尸头鼻腔外侧壁上泪骨的长、宽、厚,观察钩突、上颌线和M点(上颌线的中点)的解剖位置。结果:泪骨在鼻腔外侧壁位于钩突的前方,骨质菲薄,所测量的长、宽、厚的平均值分别为9.23、3.63和0.06 mm。结论:使用咬钳可以咬除泪骨,进一步开放泪囊内壁骨质,同时避免使用电钻,减小创伤。钩突、上颌线及M点可作为术中可靠的定位标志。
Objective: To investigate the significance of lacrimal bone in naso-lacrimal sac anastomosis. Methods: The length, width and thickness of the lacrimal bone on the lateral nasal cavity of 10 cadaveric adults (5 males and 5 females) were measured. The anatomic locations of the maxillary line and M point (the midpoint of maxillary line) were observed. Results: The lacrimal bone was located in the front of the uncinate process on the lateral wall of the nasal cavity. The average bone thickness was 9.23, 3.63 and 0.06 mm, respectively. Conclusion: The use of bite forceps can bite the lacrimal bone, and further open the inner wall of the lacrimal sac, while avoiding the use of electric drill to reduce trauma. Hook, maxillary line and M points can be used as a reliable intraoperative positioning signs.