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Bladder Neck Closure

Bladder neck closure (BNC) is an irreversible salvage procedure that permanently closes the bladder outlet at the level of the bladder neck and commits the patient to an alternative form of urinary drainage — typically a continent catheterizable channel (Mitrofanoff appendicovesicostomy or Yang-Monti ileal channel), an ileovesicostomy, or a permanent suprapubic catheter.[1][2][3] It is a last-resort intervention for the devastated or non-reconstructible bladder outlet — the endpoint of the Principles of Bladder Neck Reconstruction escalation ladder, after every lesser outlet operation has failed or is anatomically impossible.[1][2]

BNC abandons the urethral outlet entirely. It is not a failure of reconstruction — it is the most honest reconstructive endpoint when the native outlet can no longer be salvaged.

Indications​

BNC is performed in both sexes for overlapping but distinct clinical scenarios:

  • Neurogenic bladder (spinal cord injury, myelomeningocele, sacral agenesis) — the most common indication across both sexes, particularly when the urethra has been destroyed by chronic indwelling catheterization or when prior bladder-neck procedures have failed.[2][3][4]
  • Bladder exstrophy — a major indication in pediatric reconstructive practice, often after multiple failed bladder-neck reconstructions in the exstrophy-epispadias complex.[2][5][6]
  • Recalcitrant post-prostatectomy vesicourethral anastomotic stenosis (VUAS) with severe incontinence (men) — when repeated endoscopic management and open / robotic VUAS reconstruction have failed.[7][1][8]
  • Severely compromised female bladder outlet — urethral erosion from chronic indwelling catheterization, failed anti-incontinence operations with severe intrinsic sphincter deficiency (ISD), and post-vulvectomy or post-radiation urethral destruction. The AUA/SUFU 2023 SUI Guideline explicitly recommends considering BNC with a catheterizable stoma in women with a severely compromised outlet.[9][10]
  • Complex urethrovesical fistula and radiation-damaged urethra (men) — when urethral pathology is unsalvageable, BNC combined with prostatectomy and intestinal interposition has been described.[11]

The Continuum: Obstructing PVS to Formal BNC​

In women, BNC sits at the irreversible end of a graded escalation that begins with the autologous pubovaginal sling (PVS). The AUA/SUFU 2023 Guideline explicitly positions these as a single continuum for the severely compromised outlet:[10]

  1. Traditional autologous PVS at the bladder neck — standard tension for SUI / ISD.[12][13]
  2. Obstructing autologous PVS ("functional urethral closure") — intentional urethral occlusion with planned lifelong CIC (Chancellor 1994: 14/14 women dry at 24 mo with destroyed urethra).[14]
  3. Formal BNC with continent catheterizable channel.[1][2][3]
  4. Artificial urinary sphincter (AUS) — feasible at the bladder neck in selected women but with revision ~15% / explantation ~13% / vaginal erosion ~9%.
  5. Total urinary diversion (ileal conduit or continent diversion).

The guideline specifically warns that the degree of bladder-neck occlusion required for the devastated outlet "could require a degree of tension that should preclude the use of synthetic slings" — only autologous tissue (rectus fascia or fascia lata) should be used in the obstructing-PVS configuration.[10] Chancellor's argument is that obstructing PVS may be superior to formal BNC for selected patients because it preserves some option of reversibility and avoids the fistula risk inherent to bladder-neck transection — at the cost of being feasible only when some residual urethral tissue exists for sling support.[14]

FeatureObstructing PVSFormal BNC
ReversibilityPotentially reversible (sling incision)Irreversible
Fistula riskLow (no bladder-neck transection)8–20% (vesicourethral / vesicovaginal)
Continence rate~100% in small series82–96%
Requires CIC / SPTYesYes
Suitable for completely destroyed urethraLimited — needs some residual tissueYes — definitive option
Concomitant augmentationMay be neededOften needed
AUA/SUFU 2023 supportExpert OpinionExpert Opinion

Surgical Approaches and Techniques​

Retropubic (transabdominal) BNC​

The most commonly described approach, particularly in men and in complex pediatric cases.[3][15]

  1. Exposure — lower midline or Pfannenstiel incision; bladder mobilized and opened if augmentation or stoma creation is concomitant.[3]
  2. Bladder-neck division — the bladder neck is completely transected, separating the bladder from the urethra. Ureteral orifices must be identified and protected.[15]
  3. Layered closure — the bladder side is closed in at least two layers (inner mucosal-muscular + outer seromuscular) using absorbable sutures. The urethral stump is similarly oversewn.[3][15]
  4. Tissue interposition — a vascularized flap is interposed between the closed bladder neck and the urethral stump to prevent fistula formation. Hensle 1995 reported initial success in 12 / 13 cases (and ultimately 13 / 13) using a strict protocol of bladder-neck division + 2-layer closure + omental interposition.[15]

Tissue interposition options:

InterpositionEvidence / outcome
Omental flap (most common)Pedicled omental flap brought into the pelvis and secured between suture lines.[1][15]
Rectus abdominis muscle flapInferior-epigastric-based; used when omentum is unavailable. Smith 2010 — 6 patients, 100% continence, no fistulas at 45.5 mo.[16]
Human acellular dermis (HAD)Benz 2018 exstrophy series of 147 patients — fistula rate 20.8% → 5.8% (P = 0.039) with HAD or native-tissue interposition vs no interposition.[17]
Intestinal patch interpositionIleocecal or sigmoid segment used at the BNC site, particularly when prostatectomy is concomitant for unsalvageable urethral disease.[11]

Transvaginal BNC (women)​

Avoids laparotomy and is particularly suited to women with a destroyed urethra from chronic catheterization.[9][18][19]

  1. Incision — anterior vaginal-wall incision; the plane between vaginal wall and bladder neck / urethra is developed.[18][19]
  2. Dissection — circumferential dissection of the bladder neck; urethra is separated from the bladder.[20]
  3. Closure — multi-layered closure of the bladder neck. In Rovner's posterior urethral flap technique, the dorsally bivalved urethra is rotated cephalad onto the incised anterior bladder wall, placing the suture line high in the retropubic space — away from the ureteral orifices and the vaginal incision — to minimize fistula risk.[20]
  4. Vaginal-wall closure — closed as a separate layer over the repair.[18]

In Willis 2015 (n = 64 women, transvaginal vs retropubic with concomitant SPT), continence rates were equivalent (85.7% vs 81.5%) but the transvaginal approach offered significantly shorter operative time (78 vs 138 min), shorter hospital stay (1.5 vs 4.9 d), and fewer short-term complications (5.7% vs 31.0%).[9] Ginger 2010 noted that non-retropubic approaches (transvaginal, perineal) have been associated with higher fistula rates in some debilitated-patient series (P = 0.01).[21]

Combined abdominal-vaginal approach​

Levy 1994 described a combined approach after experiencing a 40% failure rate with purely transvaginal BNC. The combined technique was successful in 10 / 10 consecutive patients — the abdominal component allows tissue interposition and improved visualization, while the vaginal component facilitates dissection of the destroyed outlet.[22]

Concomitant Procedures​

BNC is almost never performed in isolation. The reservoir, drainage route, and continence mechanism must all be addressed simultaneously:

  • Augmentation cystoplasty (enterocystoplasty) — when bladder capacity or compliance is reduced (most neurogenic and exstrophy patients).[1][2][23]
  • Continent catheterizable channel — Mitrofanoff appendicovesicostomy or Yang-Monti ileal channel for continent abdominal-stoma drainage.[1][2][5]
  • Ileovesicostomy — incontinent low-pressure cutaneous diversion for patients who cannot perform CIC.[3]
  • Suprapubic catheter (SPT) placement — a simpler option for debilitated patients with low functional status or limited life expectancy.[21]

Outcomes​

SeriesPopulationnInitial continenceNotes
Spahn 2010[1]Mixed (exstrophy + neurogenic)—96.4%Re-intervention 39.3%; no de novo hydronephrosis
Kavanagh 2012[2]Devastated outlet (M+F) + aug + Mitrofanoff2896.4% → 100% after VVF repairMedian 69 mo
Shpall 2004[3]Neurogenic (adults)—85%15% vesicourethral fistula; upper tracts stable
Landau 2009[24]Pediatric (≥10 yr FU)—100% after revisionGood CIC compliance, low morbidity
Willis 2015[9]Women (TV vs RP)6485.7% vs 81.5%TV approach: shorter OR + LOS
O'Connor 2005[25]Suprapubic / retropubic3583% → 94% after 1 revisionMean 79 mo
Ginger 2010[21]Debilitated NGB + SPT—Variable52% early-complication rate; fistula higher with non-retropubic approach

Complications​

  • Vesicourethral / vesicovaginal fistula — the signature complication of BNC, occurring in 15–40% of cases depending on the series. Risk factors: high-pressure bladder systems, prior bladder-neck surgery, premature catheter removal, and absence of tissue interposition.[3][21][26]
  • Stomal stenosis — 23–30% of patients; umbilical stomas may have lower stenosis rates than abdominal-wall stomas.[1][26]
  • Bladder calculi — 30–40% of pediatric series, particularly in augmented bladders.[5][26]
  • Augment rupture — serious late complication in approximately 10% of augmented patients.[2]
  • Upper-tract changes — generally well preserved with appropriate diversion, but when bladder-neck procedures are performed without augmentation, the 10-year cumulative incidence of upper-tract changes exceeds 50%, and ~30% will eventually need augmentation.[23]
  • Stomal incontinence — late-onset leakage via the stoma in up to 47% of pediatric patients after initially being dry, often related to CIC compliance.[26]

Special Considerations​

Augmentation cystoplasty — with or without?​

Performing BNC without concurrent augmentation remains controversial. Grimsby 2016 — a large pediatric series — found that at 10 years, the cumulative incidence of needing augmentation was 30%, additional continence procedures 70%, and upper-tract changes > 50%.[23] Patients with prior vesicostomy or VUR surgery were at highest risk. This supports careful patient selection and intensive follow-up if augmentation is deferred — the burden of secondary procedures is high.

Patient selection and counseling​

BNC is irreversible and commits the patient to lifelong alternative bladder drainage. The AUA/SUFU NLUTD Guideline emphasizes that hand and cognitive function necessary for CIC must be assessed preoperatively, either in the patient or in a reliable caregiver.[4] Long-term CIC compliance has been shown to be good even at > 10 years of follow-up.[24]

Postoperative catheter management​

Premature catheter removal is a recognized risk factor for fistula. Most protocols maintain bladder drainage (Foley + SPT or SPT alone) for 2–3 weeks with a cystogram before catheter removal.[3][20]

Guideline positioning​

  • AUA Urethral Stricture Guideline (2023): robotic or open reconstruction may be performed for recalcitrant VUAS / bladder-neck contracture (robotic patency 72–75%); BNC with diversion is reserved for cases refractory to reconstruction.[7]
  • AUA/SUFU Female SUI Guideline (2023): consider BNC with a catheterizable stoma, AUS, or total urinary diversion for women with a severely compromised outlet.[10]
  • AUA/SUFU Adult NLUTD Guideline (2021): continent catheterizable channels with or without augmentation are supported for patients requiring BNC due to a devastated urethra.[4]

Key Technical Pearls​

  • Tissue interposition is essential — the fistula rate falls from ~21% without interposition to ~6% with omental, rectus, or HAD interposition.[15][16][17]
  • Synthetic mesh must not be used when the goal is bladder-neck occlusion — only autologous tissue (rectus fascia, fascia lata) tolerates the tension required.[10]
  • Plan the drainage route before transection — the catheterizable channel, ileovesicostomy, or SPT must already be designed; BNC without a planned outflow is not a complete operation.[2][3]
  • Consider concurrent augmentation when reservoir capacity or compliance is borderline — deferred augmentation carries a 30% subsequent-augmentation rate at 10 years.[23]
  • Maintain bladder drainage for 2–3 weeks with confirmatory cystography before catheter removal to minimize fistula risk.[3][20]

See Also​

Videos​

Bladder neck closure
Operative technique

References​

1. Spahn M, Kocot A, Loeser A, Kneitz B, Riedmiller H. Last resort in devastated bladder outlet: bladder neck closure and continent vesicostomy — long-term results and comparison of different techniques. Urology. 2010;75(5):1185-92. doi:10.1016/j.urology.2009.11.070.

2. Kavanagh A, Afshar K, Scott H, MacNeily AE. Bladder neck closure in conjunction with enterocystoplasty and Mitrofanoff diversion for complex incontinence: closing the door for good. J Urol. 2012;188(4 Suppl):1561-5. doi:10.1016/j.juro.2012.02.027.

3. Shpall AI, Ginsberg DA. Bladder neck closure with lower urinary tract reconstruction: technique and long-term followup. J Urol. 2004;172(6 Pt 1):2296-9. doi:10.1097/01.ju.0000144072.15735.32.

4. Ginsberg DA, Boone TB, Cameron AP, et al. The AUA/SUFU guideline on adult neurogenic lower urinary tract dysfunction: treatment and follow-up. J Urol. 2021;206(5):1106-1113. doi:10.1097/JU.0000000000002239.

5. Jayanthi VR, Churchill BM, McLorie GA, Khoury AE. Concomitant bladder neck closure and Mitrofanoff diversion for the management of intractable urinary incontinence. J Urol. 1995;154(2 Pt 2):886-8. doi:10.1097/00005392-199508000-00154.

6. Benz KS, Jayman J, Maruf M, et al. The role of human acellular dermis in preventing fistulas after bladder neck transection in the exstrophy-epispadias complex. Urology. 2018;117:137-141. doi:10.1016/j.urology.2018.04.011.

7. Wessells H, Morey A, Souter L, Rahimi L, Vanni A. Urethral stricture disease guideline amendment (2023). J Urol. 2023;210(1):64-71. doi:10.1097/JU.0000000000003482.

8. Brede C, Angermeier K, Wood H. Continence outcomes after treatment of recalcitrant postprostatectomy bladder neck contracture and review of the literature. Urology. 2014;83(3):648-52. doi:10.1016/j.urology.2013.10.042.

9. Willis H, Safiano NA, Lloyd LK. Comparison of transvaginal and retropubic bladder neck closure with suprapubic catheter in women. J Urol. 2015;193(1):196-202. doi:10.1016/j.juro.2014.07.091.

10. Kobashi KC, Vasavada S, Bloschichak A, et al. Updates to surgical treatment of female stress urinary incontinence (SUI): AUA/SUFU guideline (2023). J Urol. 2023;209(6):1091-1098. doi:10.1097/JU.0000000000003435.

11. Ullrich NF, Wessells H. A technique of bladder neck closure combining prostatectomy and intestinal interposition for unsalvageable urethral disease. J Urol. 2002;167(2 Pt 1):634-6. doi:10.1016/S0022-5347(01)69101-8.

12. Wu JM. Stress incontinence in women. N Engl J Med. 2021;384(25):2428-2436. doi:10.1056/NEJMcp1914037.

13. Mahdy A, Ghoniem GM. Autologous rectus fascia sling for treatment of stress urinary incontinence in women: a review of the literature. Neurourol Urodyn. 2019;38 Suppl 4:S51-S58. doi:10.1002/nau.23878.

14. Chancellor MB, Erhard MJ, Kiilholma PJ, Karasick S, Rivas DA. Functional urethral closure with pubovaginal sling for destroyed female urethra after long-term urethral catheterization. Urology. 1994;43(4):499-505. doi:10.1016/0090-4295(94)90241-0.

15. Hensle TW, Kirsch AJ, Kennedy WA, Reiley EA. Bladder neck closure in association with continent urinary diversion. J Urol. 1995;154(2 Pt 2):883-5. doi:10.1097/00005392-199508000-00153.

16. Smith EA, Kaye JD, Lee JY, Kirsch AJ, Williams JK. Use of rectus abdominis muscle flap as adjunct to bladder neck closure in patients with neurogenic incontinence: preliminary experience. J Urol. 2010;183(4):1556-60. doi:10.1016/j.juro.2009.12.044.

17. Benz KS, Jayman J, Maruf M, et al. The role of human acellular dermis in preventing fistulas after bladder neck transection in the exstrophy-epispadias complex. Urology. 2018;117:137-141. doi:10.1016/j.urology.2018.04.011.

18. Petrikovets A, Sun H, Sheyn D, Slopnick E, Hijaz A. Transvaginal bladder-neck closure: a step-by-step video for female pelvic surgeons. Int Urogynecol J. 2019;30(1):159-161. doi:10.1007/s00192-018-3766-4.

19. Zimmern PE, Hadley HR, Leach GE, Raz S. Transvaginal closure of the bladder neck and placement of a suprapubic catheter for destroyed urethra after long-term indwelling catheterization. J Urol. 1985;134(3):554-7. doi:10.1016/s0022-5347(17)47290-9.

20. Rovner ES, Goudelocke CM, Gilchrist A, Lebed B. Transvaginal bladder neck closure with posterior urethral flap for devastated urethra. Urology. 2011;78(1):208-12. doi:10.1016/j.urology.2010.11.054.

21. Ginger VA, Miller JL, Yang CC. Bladder neck closure and suprapubic tube placement in a debilitated patient population. Neurourol Urodyn. 2010;29(3):382-6. doi:10.1002/nau.20751.

22. Levy JB, Jacobs JA, Wein AJ. Combined abdominal and vaginal approach for bladder neck closure and permanent suprapubic tube: urinary diversion in the neurologically impaired woman. J Urol. 1994;152(6 Pt 1):2081-2. doi:10.1016/s0022-5347(17)32313-3.

23. Grimsby GM, Menon V, Schlomer BJ, et al. Long-term outcomes of bladder neck reconstruction without augmentation cystoplasty in children. J Urol. 2016;195(1):155-61. doi:10.1016/j.juro.2015.06.103.

24. Landau EH, Gofrit ON, Pode D, et al. Bladder neck closure in children: a decade of followup. J Urol. 2009;182(4 Suppl):1797-801. doi:10.1016/j.juro.2009.03.074.

25. O'Connor RC, Stapp EC, Donnellan SM, et al. Long-term results of suprapubic bladder neck closure for treatment of the devastated outlet. Urology. 2005;66(2):311-315. doi:10.1016/j.urology.2005.03.009.

26. Nguyen HT, Baskin LS. The outcome of bladder neck closure in children with severe urinary incontinence. J Urol. 2003;169(3):1114-6; discussion 1116. doi:10.1097/01.ju.0000051581.87633.02.