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对50人直肠角距肛门口长度、口服钡餐在直肠角停留时间、直肠角与排便关系、直肠角部静息压和排便压进行观察和测定,证实肛管直肠角对排便有重要作用,根据直肠角解剖生理,在直肠癌根治术中利用结肠残端设计了内角90°的新直肠角和人工内括约肌在会阴部设置人工肛门成功。对471例直肠癌病人治疗后经6个月～4年随访.控制排便总优良率为92%,疗效满意。
The length of the anorectal angle from 50 to the anus, the duration of oral rectal dwell time, the relationship between rectal angle and defecation, resting pressure and defecation pressure in the rectum were observed and measured. It was confirmed that the rectum of the anus had an important role in defecation. Rectal anatomy and physiology, the use of colon stump rectal cancer radical surgery designed a new angle of 90 ° and rectal artificial sphincter in the perineal artificial anus set. 471 cases of rectal cancer patients after treatment for 6 months to 4 years follow-up control of total defecation excellent rate of 92%, with satisfactory results.