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目的 评价改良括约肌间瘘管结扎术(ligation of intersphincteric fistula tract,LIFT)治疗低位肛瘘的临床疗效.方法 低位肛瘘病人40例,随机分成试验组和对照组,每组各20例.试验组采用改良LITF,对照组采用传统肛瘘切除术,比较两组临床疗效.结果 试验组和对照组创面愈合时间分别为(17.8 ±4.5)天和(24.7 ±5.8)天,疼痛持续时间分别为(6.9 ±1.5)天和(4.0 ± 1.3)天,术后肛门功能评分分别为(3.7 ±2.5)分和(2.9 ±1.8)分,两组比较,差异有统计学意义(P0.05).随访6~12个月,两组复发率比较差异无统计学意义(P>0.05).结论 改良LITF是一种疗效好、创伤小、痛苦小、病程短、术后复发率低、肛门控便功能影响小的新型手术方式.“,”Objective To study the effects of modified ligation of intersphincteric fistula tract (LITF)for low anal fistula.Methods A total of 40 consecutives were divided randomly into experiment and control groups(each 20 cases).The patients in experiment group received modified LITF and patients in control group adopted traditional anal fistula resection,then to compare the effects.Results The wound healing time in experiment group[(17.8 ± 4.5)d]was shorter than that in control group[(24.7 ± 5.8) d](P<0.05);the duration of pain in experiment group[(6.9 ± 1.5)d]was longer than that in control group[(4.0 ± 1.3)d](P<0.05);the postoperative anal function score in experiment group(3.7 ± 2.5)was better than that in control group(3.7 ± 2.5)(P0.05).Conclu-sion It is more effective,less injury,less pain,shorter course,less recurrence and better anal function of modified LITF.