How does puborectalis syndrome develop? Puborectalis syndrome is a defecation disorder characterized by spastic hypertrophy of the puborectalis muscle, resulting in obstruction at the outlet of the pelvic floor, and is a common type of outlet obstruction constipation, mainly manifesting as anal tightness, inability to open the anus during defecation, straining to defecate, difficulty in defecation, and significantly prolonged defecation time. (The anatomy of the puborectalis muscle is illustrated and animated by 3D simulation). The pathogenesis of puborectalis syndrome is not well understood, but it is mainly related to infection, congenital factors, long-term use of laxatives, and poor defecation habits. The disease is characterized by contractural hypertrophy of the puborectalis muscle and paradoxical contraction of the external sphincter during defecation, resulting in obstruction at the pelvic floor outlet and impaired rectal emptying. What are the methods of relieving puborectalis syndrome? For those with mild symptoms, short history, spasm or hypertrophy of the puborectal muscle with paradoxical contraction, non-surgical treatment, such as medication or anal dilation, can be taken first. For those who have a long history of disease, conservative treatment is ineffective, and at the same time the puborectal muscle is hypertrophic and scar formation, surgical treatment is used.