[Double-exposure defecography following perineal sphincteroplasty]

A new diagnostic method is presented as "Double-Exposure Defaecography". Its advantage is the reliable evaluation of functional parameters of defaecography without the aid of obligatory auxiliary lines in relation to the drawing of the relevant skeletal parts. Less display and effort are needed than in cineradiography. The so called pinching test allows functional, quantitative examination of musculus puborectalis. The evaluation is performed on double-exposed x-ray films. Besides a group of patients suffering from anorectal incontinence and difficulties in defaecation (n = 42), a group of patients (n = 21) with smooth-muscular perineal sphincter replacement was controlled by double-exposure defaecography. This fairly new method of surgery restores continence in 80% of the cases.