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通过１１０具尸体标本筛顶壁的观察，筛顶壁为一前窄后宽、向内向后倾斜的骨板，长２８．２ｍｍ，前端宽７．５ｍｍ，后端宽９．６ｍｍ，厚为０．９ｍｍ。筛顶壁与筛板的连接方式分为两种，水平式占１７．３％，高台式占８２．７％。筛前、后动脉在筛窦内均靠筛顶下方并与筛板同水平走行。文中讨论了内窥镜鼻窦手术时确定筛顶壁的方法，供临床参考。
Through the observation of the top wall of 110 cadaver specimens, the top of the sieve was an anterior, narrow, posterior and posterior oblique bone plate with a length of 28.2mm, a front width of 7.5mm and a width of 9.6mm at the back and a thickness of 0 .9mm. There are two types of connection between the top of the sieve and the frit, the horizontal type is 17.3% and the high type is 82.7%. Before the sieve, the posterior arteries in the ethmoid sinus are under the sieve bottom and with the same level of sieve. This article discusses the endoscopic sinus surgery to determine the method of screening the top wall for clinical reference.