Methods Anatomical principle and combined operations of fistulectomy, sphincter preservation, suturing internal stoma, and open wound were utilized to treat high complex anal fistula.

• 方法应用解剖学原理，行瘘管切除、保留括约肌、内口缝合、创面开放术式，对高位复杂性肛瘘进行手术治疗。