Abstract：
OBJECTIVE: To identify anatomical factors affecting the outcome of dcryocystorhinostomy (DCR).
METHODS: The study included the results of dacryocystography in 73 patients after DCR: 37 cases of failed DCR and 36 cases of successful DCR. Biometric characteristics of the formed ostium were evaluated: the horizontal size of the bony \"window\" and the soft tissue part of the ostium, the vertical size of the bony \"window\" and soft tissue ostium, the height of the fragment of the remaining bone above and below the line of the common canaliculus, and the height of the \"pocket\" formed below the lower edge of the ostium. Statistical analysis was performed using parametric and non-parametric statistical methods. Differences were considered significant at p ≤ 0.05.
RESULTS: Intergroup differences were identified in the values of the maximum horizontal size of the bony \"window\" (p = 0.015), the maximum horizontal size of the soft tissue \"window\" (p < 0.001), the maximum vertical size of the soft tissue \"window\" (p < 0.001), and the height of the fragment of the remaining bone below the level of the common canaliculus to the edge of the formed ostium (p = 0.004).
CONCLUSIONS: The stage of forming the bony \"window\" influences the success of DCR. Not only the position of the \"window\" is important, but also the geometric properties of the formed ostium.
METHODS: The study included the results of dacryocystography in 73 patients after DCR: 37 cases of failed DCR and 36 cases of successful DCR. Biometric characteristics of the formed ostium were evaluated: the horizontal size of the bony \"window\" and the soft tissue part of the ostium, the vertical size of the bony \"window\" and soft tissue ostium, the height of the fragment of the remaining bone above and below the line of the common canaliculus, and the height of the \"pocket\" formed below the lower edge of the ostium. Statistical analysis was performed using parametric and non-parametric statistical methods. Differences were considered significant at p ≤ 0.05.
RESULTS: Intergroup differences were identified in the values of the maximum horizontal size of the bony \"window\" (p = 0.015), the maximum horizontal size of the soft tissue \"window\" (p < 0.001), the maximum vertical size of the soft tissue \"window\" (p < 0.001), and the height of the fragment of the remaining bone below the level of the common canaliculus to the edge of the formed ostium (p = 0.004).
CONCLUSIONS: The stage of forming the bony \"window\" influences the success of DCR. Not only the position of the \"window\" is important, but also the geometric properties of the formed ostium.
摘要：
目的：确定影响鼻腔泪囊吻合术（DCR）结局的解剖学因素。
方法：本研究包括73例DCR后患者的泪囊造影结果：DCR失败37例，DCR成功36例。评估了形成的口的生物特征：骨“窗口”的水平尺寸和口的软组织部分，骨“窗口”和软组织口的垂直尺寸，剩余骨头的碎片在总泪小管线上方和下方的高度，以及在口下边缘下方形成的“口袋”的高度。使用参数和非参数统计方法进行统计分析。在p≤0.05时,差异被认为是显著的。
结果：在骨“窗口”的最大水平尺寸值（p=0.015）中确定了组间差异，软组织“窗口”的最大水平尺寸（p<0.001），软组织“窗口”的最大垂直尺寸（p<0.001），和剩余骨碎片在总泪小管水平以下至形成的窦口边缘的高度（p=0.004）。
结论：形成骨性“窗口”的阶段影响DCR的成功。不仅“窗口”的位置很重要，还有形成口的几何性质。
方法：本研究包括73例DCR后患者的泪囊造影结果：DCR失败37例，DCR成功36例。评估了形成的口的生物特征：骨“窗口”的水平尺寸和口的软组织部分，骨“窗口”和软组织口的垂直尺寸，剩余骨头的碎片在总泪小管线上方和下方的高度，以及在口下边缘下方形成的“口袋”的高度。使用参数和非参数统计方法进行统计分析。在p≤0.05时,差异被认为是显著的。
结果：在骨“窗口”的最大水平尺寸值（p=0.015）中确定了组间差异，软组织“窗口”的最大水平尺寸（p<0.001），软组织“窗口”的最大垂直尺寸（p<0.001），和剩余骨碎片在总泪小管水平以下至形成的窦口边缘的高度（p=0.004）。
结论：形成骨性“窗口”的阶段影响DCR的成功。不仅“窗口”的位置很重要，还有形成口的几何性质。
