Abstract
The results of repair to the internal and sphincter alone has been evaluated in five patients with persistent anal incontinence following surgery which affected the internal anal sphincter. All had passive incontinence for solid or liquid stool. Symptoms, anorectal manometry, and anal endosonography were evaluated before and after surgery. After surgery three patients felt improved but had still persistent symptoms, and no patients achieved full continence. Three patients showed an increased maximal and resting pressure, but only one of them was within the normal range. Post operatively, all the anal ultrasound scans showed a persistent internal sphincter defect, and two showed an unsuspected external anal sphincter defect. Although some patients felt symptomatically improved, the overall clinical, manometric and radiological findings after internal and sphincter repair were disappointing.
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