The results were analyzed by the statistical software SPSS. Results:The detection frequencies of anterior, middle and posterior ethmoidal foramen (AEF,MEF,PEF) were 100%,42.9% and 99.5%.

• 结果眶内壁筛孔总数显示为单孔、二孔、三孔、四孔、五孔的比例分别为0.；5%25、54