Defecography; constipation; Obstruction of functional outlet; Intractableconstipation.
排粪造影；便秘；功能性出口梗阻；顽固性便秘。
2
Surgical intervention is only indicated in a small group of patients with intractableconstipation failed to conservative treatment.
只有少数经保守治疗无效的顽固性便秘患者需要手术治疗。
3
Objective To study the therapeutic value of colonic exclusion (CE) on intractable slow transit constipation (STC) and evaluate its influence on intestinal function.