Tanagho Anterior Bladder Tube
The Tanagho anterior bladder tube uses tubularized bladder-wall tissue to reconstruct the bladder neck or proximal urethra. It was developed primarily for severe urinary incontinence and urethral loss. It is a historical reconstructive technique with selected salvage applications, rather than a standard first-line treatment for modern BNC/VUAS.[1][2]
Concept and operative principles
A vascularized strip of anterior bladder wall is fashioned into a mucosa-lined tube and connected to the remaining outlet or urethral target. Preserve the tissue base and blood supply, protect the ureteral orifices, avoid tension or rotation, close the donor defect and provide dependable drainage. The tube's orientation, dimensions, caliber and catheter regimen vary across the named modifications; do not combine their details into one universal operative protocol.[1][2][3][4]
The construction seeks to restore outlet length and resistance. It is not a normal striated sphincter, and the available clinical reports do not establish a simple mechanism in which the tube reliably opens whenever the detrusor contracts. Continence and emptying depend on the entire reservoir/outlet system; obstruction or a need for intermittent catheterization may result.
Original experience and modifications
| Report | Scope | Interpretation |
|---|---|---|
| Tanagho 1981 | 25 posterior and 50 anterior bladder-tube repairs, plus six additional post-prostatectomy applications described | Approximately 70% success in the anterior group. “10 years' experience” is the treatment period, not ten-year follow-up of all 50 patients.[1] |
| Koraitim 1985 | 27 patients: 10 standard anterior tubes, 17 treated with three other configurations | 85% reported overall success. Tailoring was the authors' rationale; no comparator proves that a particular configuration caused a better result.[2] |
| Beck 1979 | Five difficult urethrovesical anastomoses during radical prostatectomy | Technical feasibility in selected patients; no control group proves improved postoperative continence.[3] |
| Seaman/Benson 1996 | 29 tubularized bladder-neck reconstructions, compared with 30 selected controls | A 5 cm-base/3 cm-apex flap was tubularized over a 30 Fr catheter. In the reconstruction group, 7/29 were dry at 24 hours, 27/29 at 3 months and 28/29 at 6 months; one BNC occurred. Selection of controls was not random allocation to treatment.[5] |
Those dimensions belong to the Seaman modification and should not be presented as mandatory dimensions of Tanagho's original operation.
Female urethral reconstruction
Radwan's 16-patient retrospective experience compared six anterior bladder-tube repairs with ten labial-flap repairs; 15 patients had follow-up. Complete continence was 4/6 and 6/9, respectively, at mean follow-up 42 months; two patients had partial continence across the combined evaluable cohort. Equal observed proportions in these tiny selected groups do not establish equivalence, and a combined-cohort rate must not be assigned to both treatment columns.[6]
Nayyar's U-shaped modification was reported in three women with traumatic bladder-neck/urethral obliteration. It aims to avoid some displacement, rotation and posterior-suture-line problems of the classic construction. Reported tube lengths were 3–3.5 cm, with follow-up of 15, 7 and 3 months. Favorable voiding and continence in these cases do not establish durable effectiveness or a preferred operation for all female outlet defects.[4]
Distinguish other bladder-flap operations
| Procedure | Difference |
|---|---|
| Y-V plasty | Advances a bladder flap into an opened stenosis without constructing a long tube |
| T-plasty | Uses a modified two-flap configuration to widen the outlet |
| Pippi Salle urethral lengthening | Creates a flap-valve/lengthening configuration, not a circumferential anterior tube; a distinct pediatric operation[7][8] |
| Tubularized bladder-flap catheterizable channel | Creates a route for catheterization; its continence mechanism, outlet and long-term revision outcomes are not the same as a Tanagho neourethra |
See catheterizable channels for that separate application. Anterior bladder tissue is a shared material, not proof that the procedures are interchangeable.
Current clinical use
Consider bladder-tube reconstruction only after defining the defect, reservoir function, tissue quality, continence mechanism and feasible alternatives. Historical percentages cannot be used to rank it against current AUS, sling, graft or diversion strategies. The reports are small, heterogeneous and often include additional procedures; neither reliable spontaneous emptying nor freedom from further continence surgery is guaranteed.[1][2][6][4]
References
1. Tanagho EA. "Bladder Neck Reconstruction for Total Urinary Incontinence: 10 Years Experience." The Journal of Urology. 1981;125(3):321-6. doi:10.1016/s0022-5347(17)55024-7
2. Koraitim M. "Anterior Bladder Tube: 4 Forms for Incontinence of Different Etiology." The Journal of Urology. 1985;134(2):269-73. doi:10.1016/s0022-5347(17)47120-5
3. Beck PH, McAninch JW, Stutzman RE. "Anterior Bladder Tube Flap Reconstruction of the Urethrovesical Neck After Radical Retropubic Prostatectomy." The Journal of Urology. 1979;121(3):379-81. doi:10.1016/s0022-5347(17)56795-6
4. Nayyar R, Jain S, Sharma K, Pethe S, Kumar P. "A Novel Anterior Bladder Tube for Traumatic Bladder Neck Contracture in Females: Initial Results." Urology. 2020;139:201-206. doi:10.1016/j.urology.2019.12.037
5. Seaman EK, Benson MC. "Improved Continence With Tubularized Bladder Neck Reconstruction Following Radical Retropubic Prostatectomy." Urology. 1996;47(4):532-5. doi:10.1016/S0090-4295(99)80490-7
6. Radwan MH, Abou Farha MO, Soliman MG, et al. "Outcome of Female Urethral Reconstruction: A 12-Year Experience." World Journal of Urology. 2013;31(4):991-5. doi:10.1007/s00345-013-1087-2
7. Salle JL, de Fraga JC, Amarante A, et al. "Urethral Lengthening With Anterior Bladder Wall Flap for Urinary Incontinence: A New Approach." The Journal of Urology. 1994;152(2 Pt 2):803-6. doi:10.1016/s0022-5347(17)32715-5
8. Salle JL, McLorie GA, Bägli DJ, Khoury AE. "Urethral Lengthening With Anterior Bladder Wall Flap (Pippi Salle Procedure): Modifications and Extended Indications of the Technique." The Journal of Urology. 1997;158(2):585-90. doi:10.1097/00005392-199708000-00092