Episioproctotomy for Rectovaginal Fistula
Episioproctotomy opens an accessible rectovaginal fistula through the perineum and involved anterior sphincter/septal tissues, followed by layered reconstruction. ASCRS 2022 supports its use for obstetric or cryptoglandular RVF with an anal sphincter defect (recommendation 15, strong recommendation with low-quality evidence, 1C). It is a selected reconstructive option, not a mandate to divide an intact sphincter.[1]
Related pages: ERAF ± Sphincteroplasty, Anal Sphincteroplasty, Nonoperative RVF Management and Rectovaginal Fistula.
Selection
The strongest published experience concerns low, accessible obstetric or cryptoglandular fistulas with anterior sphincter disruption, including cloaca-like perineal defects. A prior failed repair or pre-existing incontinence can affect selection, but neither alone determines the operation.[2][3]
Assess fistula height, tissue viability, sphincter anatomy, continence, bowel function and previous repairs. Drain abscesses and control active inflammation before definitive reconstruction; ASCRS supports a draining seton when it facilitates control of fistula-associated infection.[1]
| Finding | Consequence for planning |
|---|---|
| Intact anterior sphincter | Favor an approach that preserves function; deliberate division adds reconstructive burden and risk. |
| Defect reachable through the perineum | Episioproctotomy may provide access for fistula and sphincter reconstruction together. |
| Cloaca-like deformity | Identify disrupted/retracted muscle remnants; an absent perineal body does not mean there is no sphincter muscle available to repair. |
| High fistula or extensive tissue loss | Consider other exposures or tissue transfer rather than extending a local operation beyond feasible anatomy. |
| Crohn's disease or radiation damage | Assess disease activity and tissue quality in a specialist team; the obstetric/cryptoglandular results do not predict outcomes here. |
Crohn's disease is not an absolute technical prohibition: the Otero-Piñeiro tertiary-center cohort included episioproctotomy among several approaches. Its eventual 71.7% healing across 166 Crohn's-RVF patients and multiple operations does not establish that rate for episioproctotomy itself.[4]
Operative Framework
Episioproctotomy differs from a limited sphincteroplasty in the amount of perineal and septal tissue that must be opened to reach the fistula. The extent of division follows the defect; it is not automatically a full-length division of every anterior layer.[1]
- Define the anatomy under adequate exposure. Identify rectal and vaginal openings, the intervening defect and available sphincter remnants. Avoid forcing a probe into a false passage.
- Open the involved perineal/septal tissues deliberately. Preserve viable tissue and identify the muscle ends that will require reconstruction.
- Prepare and close the rectal component. Debride nonviable tissue, obtain a tension-free closure and protect the lumen. Scar excision and suture configuration depend on the tissue; “remove all scar” is not a universal rule.
- Reconstruct the sphincter and perineum. Account for both external and internal sphincter injury, mobilizing enough tissue for repair while preserving its blood supply. See the sphincteroplasty page for delayed-repair variants and their limitations.[6]
- Restore vaginal and superficial coverage. Tailor closure and drainage to the wound; avoid tension and narrowing. Additional levator plication is a technique choice with uncertain independent benefit, not an obligatory layer in every operation.
These are planning principles, rather than a single validated stitch-by-stitch protocol. Current IUGA guidance for acute OASI distinguishes EAS and IAS repair and prohibits overlap of an isolated IAS; those recommendations should not be silently conflated with all chronic fistula-reconstruction variants.[7]
Healing and Functional Outcomes
| Primary report | Findings | Interpretation |
|---|---|---|
| Hull 2007: 42 women | Nine had cloaca and 33 had RVF. All 11 recurrences occurred in the RVF subgroup: 22/33 RVF healed (66.7%), versus 9/9 cloaca; overall healing was 31/42 (73.8%). Mean follow-up 37 months. | The RVF and cloaca denominators must be kept separate; nine cloaca successes do not guarantee success in other patients.[2] |
| Hull 2011: 87 women | Surgeon-selected episioproctotomy in 50 (39 healed, 78%) versus ERAF in 37 (23 healed, 62.2%); healing comparison P = 0.1. Fecal and sexual-function measures favored episioproctotomy; mean follow-up 49.2 months. | Retrospective nonrandomized comparison. It establishes neither equivalent healing nor causal superiority in function.[3] |
| El-Gazzaz 2010: 100 obstetric/cryptoglandular patients | Overall 68 healed at mean 45.8 months. Episioproctotomy was associated with healing on unadjusted analysis but not multivariable analysis. Among 47 sexually active participants, 12 reported dyspareunia. | Mixed procedures; the 25.5% dyspareunia estimate is not episioproctotomy-specific. This institutional population may overlap with other reports and should not be counted as an independent trial.[5] |
ASCRS reports that in the 50-patient episioproctotomy series, preoperative FI in 25 patients fell to postoperative FI in four. Its description of 46/50 having “rare” postoperative incontinence is not the same endpoint as 92% being completely continent. Discuss residual symptoms separately from anatomical closure.[1]
What the 2025 synthesis adds
A network meta-analysis of 32 nonrandomized studies limited to obstetric RVF associated Musset and excision/layered-closure approaches with better anatomical outcomes than ERAF. Functional outcomes were too sparsely reported for pooling, and fistula characteristics and treatment selection were incompletely described. This supports attention to sphincter reconstruction when indicated, while leaving the best comparative operation uncertain.[8]
Diversion and Aftercare
Diversion is individualized according to infection, tissue quality, prior failures, wound burden and patient needs. In Hull 2007, 23/42 had a stoma; absence of a statistically significant association with healing in a small retrospective series does not establish that diversion has no effect. In the 2011 episioproctotomy group, ASCRS reports 36/50 were diverted and median closure was 3.4 months; that observation is not a mandatory reversal date.[1][2]
After repair, manage stool consistency, pain, wound hygiene and drainage, and reassess promptly for infection or dehiscence. Individualize activity and intercourse restrictions to healing. Confirm fistula closure and assess continence before reversal of a protective stoma. Record both leakage through the vagina and anal-control symptoms; one may improve while the other persists.
Counseling
The procedure can repair fistula and sphincter disruption together, at the cost of a more extensive perineal reconstruction. Discuss persistent/recurrent fistula, residual or worsened FI, wound complications and sexual pain. Neither the reported healing range nor observational functional advantages identify the best operation for every patient. Higher BMI and prior repairs were associated with failure in some mixed-procedure cohorts, while other small series found no significant predictors; they are not deterministic rules.[2][5]
References
1. Gaertner WB, Burgess PL, Davids JS, et al. "The American Society of Colon and Rectal Surgeons clinical practice guidelines for the management of anorectal abscess, fistula-in-ano, and rectovaginal fistula." Dis Colon Rectum. 2022;65(8):964–985. doi:10.1097/DCR.0000000000002473
2. Hull TL, Bartus C, Bast J, Floruta C, Lopez R. "Multimedia article. Success of episioproctotomy for cloaca and rectovaginal fistula." Dis Colon Rectum. 2007;50(1):97–101. doi:10.1007/s10350-006-0790-0
3. Hull TL, El-Gazzaz G, Gurland B, Church J, Zutshi M. "Surgeons should not hesitate to perform episioproctotomy for rectovaginal fistula secondary to cryptoglandular or obstetrical origin." Dis Colon Rectum. 2011;54(1):54–59. doi:10.1097/01.dcr.0000388926.29548.36
4. Otero-Piñeiro AM, Jia X, Pedersen KE, et al. "Surgical intervention is effective for the treatment of Crohn's-related rectovaginal fistulas: experience from a tertiary inflammatory bowel disease practice." J Crohns Colitis. 2023;17(3):396–403. doi:10.1093/ecco-jcc/jjac151
5. El-Gazzaz G, Hull TL, Mignanelli E, et al. "Obstetric and cryptoglandular rectovaginal fistulas: long-term surgical outcome; quality of life; and sexual function." J Gastrointest Surg. 2010;14(11):1758–1763. doi:10.1007/s11605-010-1259-y
6. Ong F, Phan-Thien KC. How to do it: delayed sphincteroplasty for obstetric anal sphincter injury. ANZ J Surg. 2022;92(5):1208–1210. doi:10.1111/ans.17650.
7. Sultan AH, Okeahialam NA, De Leeuw J, et al. IUGA International Guidelines on Obstetric Anal Sphincter Injuries. Int Urogynecol J. 2026;37:2223–2280. doi:10.1007/s00192-026-06642-3.
8. Venara A, Houlet E, Poupard E, et al. Sphincter repair procedures may be favored in the treatment of obstetrical recto-vaginal fistula: a systematic review of the literature and meta-analysis. Tech Coloproctol. 2025;29:95. doi:10.1007/s10151-025-03133-3. Author-name correction: 10.1007/s10151-025-03168-6.