The spastic pelvic floor syndrome. Large bowel outlet obstruction caused by pelvic floor dysfunction: a radiological study

Int J Colorectal Dis. 1986 Jan;1(1):44-8. doi: 10.1007/BF01648836.


To determine whether a persistent contraction of the pelvic floor muscle during straining, as observed in constipated patients during defaecography, was due to a conscious action of the patients or really represented a functional disorder, segmental colonic transit studies were performed in 24 patients in whom the diagnosis spastic pelvic floor syndrome was made. Abnormal segmental transit indicating outlet obstruction occurred in 92% of the patients. Four different types of segmental transit abnormalities were observed which suggested that the spastic pelvic floor syndrome involved a functional outlet obstruction leading to retrograde filling of the colon and severe straining. A causative relation with other anorectal abnormalities is suggested.

MeSH terms

  • Adult
  • Aged
  • Anal Canal / physiopathology*
  • Colon / physiopathology
  • Colonic Diseases, Functional / diagnostic imaging*
  • Colonic Diseases, Functional / physiopathology
  • Constipation / diagnostic imaging*
  • Defecation
  • Gastrointestinal Motility
  • Humans
  • Middle Aged
  • Muscle Contraction
  • Muscles / physiopathology
  • Radiography