Urethroplasty with Buccal Graft Is Indicated for Recurrent Bulbar Strictures After Multiple Dilations
Yes, urethroplasty with buccal mucosal graft is strongly indicated for this patient with residual bulbar urethral strictures that persist after multiple dilations. The American Urological Association guidelines explicitly state that strictures refractory to endoscopic procedures are unlikely to respond to further endoscopic treatments, and patients should be offered definitive urethroplasty 1.
Why Urethroplasty Is the Correct Choice
Failed Endoscopic Management Predicts Poor Outcomes
Multiple prior dilations dramatically reduce success of repeat endoscopic treatment, with failure rates exceeding 80% 2. The AUA guidelines warn that repeated endoscopic surgery may lower the success of subsequent reconstructive procedures 1.
Strictures that recur after initial endoscopic treatment have only 20% success with repeat dilation or DVIU 1, making further conservative management futile.
Buccal Mucosa Graft Urethroplasty Offers Superior Success
Success rates for buccal mucosa graft urethroplasty exceed 80-90% for bulbar strictures, regardless of whether the graft is placed dorsally, ventrally, or laterally 1, 3.
Buccal mucosa is the first-choice graft material for urethral reconstruction due to superior long-term patency and patient satisfaction 1, 2.
For bulbar strictures with multiple segments or residual narrowing after failed treatment, buccal mucosa grafts provide adequate urethral augmentation with minimal sexual dysfunction 4.
Critical Decision Points
Stricture Length Determines Technique
If the strictures are short (<2 cm each), excision and primary anastomosis achieves 90-95% success 1.
If the combined length approaches or exceeds 2 cm, or if there are multiple segments, substitution urethroplasty with buccal mucosa graft is preferred 1, 2.
Urethral Rest Period Before Surgery
Implement a 4-6 week period without urethral instrumentation before definitive urethroplasty to allow accurate assessment of stricture severity 2.
If the patient cannot void adequately during this rest period, place a suprapubic catheter rather than continuing urethral catheterization 1, 2.
Common Pitfalls to Avoid
Do Not Continue Endoscopic Management
Repeated dilations or DVIU will lengthen and complexify the strictures, making subsequent urethroplasty more difficult and less successful 2.
The fact that "adequate contrast is outlining the lumen" on imaging does not indicate successful treatment—clinical symptoms and flow rates determine treatment failure, not radiographic appearance alone 2.
Ensure Proper Preoperative Assessment
Obtain retrograde urethrography combined with voiding cystourethrography to define exact stricture length and degree of narrowing 2.
Measure peak urinary flow and post-void residual; flow <12-15 mL/s with elevated residual indicates clinically significant obstruction requiring intervention 2.
Surgical Approach for Multiple Bulbar Strictures
Graft Placement Options
Dorsal, ventral, or lateral graft placement all achieve equivalent success rates (83-85%) in bulbar urethroplasty 3.
For tight strictures with multiple narrowings, a two-sided dorsal plus ventral graft technique preserves the urethral plate and achieves 88% success while avoiding sexual complications 4.
Expected Outcomes
Postoperative peak flow rates typically improve from 4-8 mL/s to 15-30 mL/s 5, 6.
Complications are minimal, with major complication rates <5% and no significant risk of erectile dysfunction when the urethral plate is preserved 4, 6.
Most recurrences occur within the first 2 years, requiring follow-up with urethroscopy or urethrography during this period 7.