What is the evidence for sacral nerve stimulation over biofeedback for improving fecal incontinence and quality of life after failed sphincter preservation

What is known

- The available evidence describes both modalities as able to reduce fecal incontinence ¹, with SNS improving continence and quality of life in a small uncontrolled Crohn's series ².

What is unknown / caveats

- No systematic review directly comparing sacral nerve stimulation (SNS) with biofeedback for fecal incontinence and quality of life after failed sphincter preservation was retrieved, so a claim of consistent superiority of one over the other cannot be supported from this corpus - No comparative or pooled analysis pits the two against each other.

## References

1. Kayal M, Boland B. Approach to Therapy for Chronic Pouchitis. Annu Rev Med. 2025;76(1):167-173. PMID: 39869428.

2. Vitton V, Gigout J, Grimaud JC, Bouvier M, Desjeux A, Orsoni P. Sacral nerve stimulation can improve continence in patients with Crohn's disease with internal and external anal sphincter disruption. Dis Colon Rectum. 2008;51(6):924-7. PMID: 18259815.

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_Draft — generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct._