Urethral Stricture After Pelvic Fracture: Reconstruction Timing and Approach
A 34-year-old man was in a motorcycle crash 5 months ago with a pelvic ring fracture and a straddle injury. He was managed initially with a suprapubic catheter and a trial of urethral catheterization that failed. He now presents with a suprapubic tube in place and a 3 cm bulbar/membranous urethral stricture on retrograde urethrogram, with the prostatic urethra displaced superiorly. He is otherwise healthy, works as a construction foreman, and wants to know when he can return to work and whether he will need the suprapubic tube forever.
1. What is the appropriate timing and initial evaluation before definitive urethroplasty, and why not operate now?
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Timing and evaluation:
- Delay definitive repair until the pelvic fracture and soft tissues have stabilized, typically 3-6 months after injury (often ~6 months), to allow hematoma/inflammation to resolve and to ensure the patient is stable. He is at 5 months, so planning repair around 6 months is reasonable.
- Evaluate the stricture fully: retrograde urethrogram plus voiding cystourethrogram (or antegrade study via suprapubic tube) to define stricture length, location, and the gap. Consider MRI if the prostatic displacement and anatomy are unclear.
- Assess sphincter function and bladder neck - pelvic fracture urethral injury can involve the continence mechanism; document baseline continence.
- Urine culture and treat infection before surgery.
Why not operate now: early repair in inflamed, scarred tissue has higher failure and incontinence risk; the standard is delayed posterior urethroplasty once tissues are stable.
2. What definitive operation is indicated, and how do you counsel him about outcomes, continence, and return to work?
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Definitive operation: excision and primary anastomotic urethroplasty (perineal approach, with corporal separation and, if needed, pubectomy/inferior pubectomy for a tension-free anastomosis). A 3 cm posterior stricture with prostatic displacement is classic for this approach; graft is generally not needed for short posterior strictures once mobilization is complete.
Counseling:
- Success rates for posterior anastomotic urethroplasty are high (roughly 85-90% in experienced hands), but re-stricture is possible and may require repeat intervention.
- Continence: risk of stress incontinence exists because of the sphincter/bladder neck injury; most patients remain continent, but this must be discussed. Baseline continence should be documented.
- Erectile dysfunction is a recognized risk after pelvic fracture urethral injury and surgery; discuss.
- Suprapubic tube: it is temporary and will be removed after successful repair and voiding trial; he will not need it forever if reconstruction succeeds.
- Return to work: heavy construction work should be deferred until healing (typically 6-8 weeks postop, individualized); light duty earlier.
- Follow-up: voiding trial, uroflow, and surveillance for stricture recurrence.