瘘道通过全部或近全部括约肌者称高位肛瘘。6年中为74例作挂线疗法。其中23例是由Crohn病引起的;18例过去作过切开排脓等手术。病期约3个月～10年。一般手术方法:将外口及多数侧道切开。以探针找出内口。切除内口肛膜。切入括约肌间隙以清除隐窝腺体。将1号丝线或弹性胶带或细塑料管(口径7 Fr)穿过瘘道,在肛外结扎。然后分成4法。1.4～8周除去丝线,切开相连的括约肌以敞开瘘道,称 Fistula through all or nearly all of the sphincter, said high fistula. Six years for 74 cases for hanging line therapy. Of these, 23 were caused by Crohn’s disease and 18 were previously performed resection and drainage. The duration of about 3 months to 10 years. General surgical methods: the outer mouth and most lateral incision. Probe to find the inner mouth. Removal of the inner mouth of the anal membrane. Cut into the sphincter gap to clear the crypt glands. Thread No. 1 or elastic tape or a thin plastic tube (caliber 7 Fr) through the fistula and ligate outside the anus. Then divided into 4 methods. 1.4 to 8 weeks to remove the thread, cut the sphincter connected to open the fistula, said