Treatment of puborectalis syndrome with progressive anal dilation

The aim of this study is to assess the ability of progressive anal dilations to improve frequency of spontaneous bowel movements in patients with puborectalis syndrome (PRS).

Thirteen patients (9 females and 4 males; mean age, 37 years) with severe, chronic constipation caused by PRS were treated with daily, progressive anal dilation for a three-month period. Three dilators of 20, 23, and 27 mm in diameter were used. Dilators were inserted every day for 30 minutes (10 minutes each dilator). Patients were evaluated with anorectal manometry and defecography halfway through treatment, at the end of treatment, and six months after the end of treatment. At six months, patients also underwent physical examination.

There was a significant improvement of weekly mean spontaneous bowel movements from zero to six (P < 0.0001), and the need for laxatives decreased from 12 patients with a weekly mean of 4.6 to 2 patients once per week (P < 0.001). Enemas used before treatment by eight patients who had a weekly mean of 2.3 were, after treatment, needed only by three patients once per week (P < 0.01). During straining, tone measured with anorectal manometry decreased from 93 to 62 mmHg after six months of the end of therapy (F = 6.97; P < 0.01), and anorectal angle measured with defecography during the strain increased from 95 degrees to 110 degrees (P = not significant).

Daily progressive anal dilation should be considered as the first and most simple therapeutic approach in patients with PRS.