经肛吻合器直肠切除术用于治疗直肠前突和直肠内套叠导致的出口梗阻型便秘，术后短期有效率为67%~94%，术后中期复发率为4.3%~17.1%，但长期疗效有所下降。术后中长期并发症主要为不同程度肛门失禁，发生率为8.8%~10.7%。排粪造影研究证明，该手术有效纠正了直肠前突和套叠，疗效与纠正的程度相关。肛肠测压研究发现手术降低了直肠最大耐受容量。术前排粪造影结果对预测疗效有一定的参考意义。

Stapled transanal rectal resection in the treatment of rectocele and rectal intussusception        DING Jian-hua, ZHAO Ke.  Department of Colorectal Surgery, Colorectal Disease Center of PLA, the Second Artillary General Hospital, Beijing 100088, China
Corresponding author: ZHAO Ke, E-mail:jianhuading75@163.com
Abstract    Stapled transanal rectal resection (STARR) has been introduced as a novel surgical approach for obstructed defecation syndrome caused by rectocele and rectal intussusception. Many reports have suggested the short-term success rate after STARR varies between 67% and 94%. Midterm outcome reveals 4.3%-17.1% of symptom recurrence rate. However, the improvement declines slightly according to the long-term results. The main complication after STARR is fecal incontinence which involves about 8.8% to 10.7% of patients. Defecography research proves that STARR procedure correct both rectocele and rectal intussusception significantly. The symptom improvement is related with the defecography results after the operation. Decreased maximum tolerable volume is reported after STARR according to anorectal manometry. The defecography results are valuable to predict the outcome after STARR.