Surgical Approaches to Anal Incontinence

  1. Greg Bock Organizer and
  2. Julie Whelan
  1. W. Douglas Wong and
  2. David A. Rothenberger

Published Online: 28 SEP 2007

DOI: 10.1002/9780470513941.ch13

Ciba Foundation Symposium 151 - Neurobiology of Incontinence

Ciba Foundation Symposium 151 - Neurobiology of Incontinence

How to Cite

Wong, W. D. and Rothenberger, D. A. (2007) Surgical Approaches to Anal Incontinence, in Ciba Foundation Symposium 151 - Neurobiology of Incontinence (eds G. Bock and J. Whelan), John Wiley & Sons, Ltd., Chichester, UK. doi: 10.1002/9780470513941.ch13

Author Information

  1. Division of Colon and Rectal Surgery, University of Minnesota Medical School, Box 450, Mayo Building, 420 Delaware Street SE, Minneapolis, MN 55455, USA

Publication History

  1. Published Online: 28 SEP 2007

ISBN Information

Print ISBN: 9780471926870

Online ISBN: 9780470513941

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Keywords:

  • anal incontinence;
  • post-anal repair;
  • direct apposition;
  • dacron-impregnated silastic sleeve;
  • surgical therapy

Summary

Primary repair of acute anal sphincter injuries by direct apposition of the severed external sphincter without tension is advisable whenever feasible. However, the majority of patients who are candidates for surgical treatment of anal incontinence will undergo a secondary repair, the type of which will depend on the underlying aetiology and the surgeon's preference and experience. The most successful of these procedures is sphincter reconstruction with or without levatoroplasty for a disrupted anal sphincter (due to surgical, obstetrical or other trauma) in the absence of underlying neurological damage. Success rates are reported at 80–90%. Post-anal repair is advocated for patients with a poorly functioning sphincter with an obtuse anorectal angle, most of whom have a neurogenic basis for their incontinence. Success rates vary from 60 to 75% of cases but long-term results have been less satisfactory. Rectal procidentia is associated with faecal incontinence in 65–75% of cases. Abdominal repair (we favour suture rectopexy with sigmoid resection) restores continence in 50–80% of such patients. Patients with persisting incontinence are candidates for post-anal repair. Anal encirclement with an elastic, Dacron®-impregnated Silastic® sleeve has a limited role in selected patients. For more severe incontinence, muscle transfers (gracilis, gluteus maximus, etc.) can achieve some success but continence is less than perfect. We are currently assessing the use of an artificial anal sphincter (a modification of the AMS 800TM urinary sphincter). For patients who fail all therapeutic options, a stoma will provide a better lifestyle than coping with the consequences of faecal incontinence.