Objective: To observe the effect of posterior incision with dentate line retention in chronic anal fissure. Methods: 80 cases of chronic anal fissure patients were randomly divided into the study group and the control group with 40 cases in each group. The adopts posterior incision with dentate line retention was used in the treatment group. The adopted sphincterotomy was given in the control group. Comparisons of cure rate,wound healing time,postoperative complications and sequelae were between 2 groups after treatment. Results: The results of study group are better than those of control group including the wound healing time,the anal pain,the bleeding,the keyhole deformity and the incontinence. Conclusion: Compare to the sphincterotomy,the posterior incision with dentate line retention technique has effects such as the smaller wound,the shorter healing time,the less anal pain and the bleeding. It can preserve anal function without postoperative keyhole deformity or incontinence.%目的 观察后侧切保留齿线术治疗陈旧性肛裂的疗效.方法 将80例陈旧性肛裂患者随机分成治疗组和对照组各40例,治疗组采用后侧切保留齿线术治疗,对照组则采用后位内括约肌切断术治疗,比较两组治愈率、创面愈合时间、术后主要并发症及后遗症的差异.结果 治疗组在创面愈合时间、肛门疼痛、便血、锁孔畸形、肛门潮湿方面明显优于对照组.结论 后侧切保留齿线术与后位内括约肌切断术相比,具有创面小、愈合时间短、肛门疼痛轻、便血少,术后无锁孔畸形及肛门潮湿,更有利于保护肛门功能.
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