我院从1987年开始,采用肛门外括约肌皮下环两处切断术治疗陈旧性肛裂100余例,取得满意效果,全部病例术后一期愈合,症状消失,随访无复发。手术方法:患者取右侧卧位,屈腿抱膝,显露肛门。用0.1%新洁尔灭常规消毒后,铺无菌巾单。肛门局部阻滞麻醉,待肛门括约肌松弛后,查肛裂的位置,分别在肛裂两侧最近 Our hospital from 1987, the use of the external anal sphincter subcutaneous ring two cut off the treatment of more than 100 cases of old anal fissure, and achieved satisfactory results, all cases of a healed postoperative, the symptoms disappeared, no recurrence. Surgical methods: patients take the right lateral position, bend knees, revealing anus. With 0.1% benzalkonium bromide conventional disinfection, shop sterile single. Anal partial block anesthesia, to be anal sphincter relaxation, check the location of anal fissure, respectively, in both sides of the anal fissure