Urethral Stricture
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Direct answer
A weak, spraying stream with straining and terminal dribbling in a young man is a urethral stricture until excluded, and the diagnosis rests on uroflowmetry followed by both an ascending (retrograde) and a descending (micturition) urethrogram, because the two together — and neither alone — define the stricture's true length. Endoscopic visual urethrotomy (DVIU) suits only short bulbar strictures: roughly half recur within a year, and each repeat cut halves durable success. The gold standard for a short bulbar stricture remains excision and primary anastomosis, with success above 90 per cent; longer strictures and lichen-sclerosus disease need substitution urethroplasty with a buccal mucosal graft, the material that rewrote reconstructive urology.
What you must remember
- Aetiology by segment: anterior strictures — idiopathic bulbar, lichen sclerosus, catheterisation and instrumentation, hypospadias repair; posterior strictures — pelvic fracture urethral distraction injury, the domain of road traffic accidents.
- Diagnosis pair: retrograde urethrogram plus micturating cystourethrogram, with flexible urethroscopy and uroflowmetry as office complements; a single study underestimates length and misdirects the reconstruction.
- DVIU rules: optical internal urethrotomy for short bulbar strictures under about 1 cm; recurrence approaches half at one year, and repeat DVIU for recurrence offers dismal long-term control — the second cut is the indication for urethroplasty counselling.
- Excision and primary anastomosis: for bulbar strictures up to about 2 cm, spatulated and tension-free, success above 90 per cent — the operation every stricture stem wants as its answer when length permits.
- Buccal mucosal graft: for longer strictures, panurethral disease and lichen sclerosus; cheek harvest is preferred over lip (longer, thicker, less contracture), with one-stage dorsal or ventral onlay and staged options for the worst anatomy.
- Pelvic fracture urethral distraction injury: acute phase — suprapubic catheter, not blind railroading; delayed anastomotic repair after about three months once the pelvis settles.
One young man's stream, reconstructed
A 32-year-old presents with a stream that has thinned over two years and sprays; uroflowmetry shows a plateau curve with Qmax of 8 mL/s. Retrograde urethrogram followed by the micturating study shows a 1.5 cm bulbar stricture — short, and reachable by the perineal route. DVIU would open it tomorrow, but a 1.5 cm stricture sits above the ideal cut, and a first-year recurrence of roughly half makes it a temporary guest rather than a cure. He chooses reconstruction. Excision of the fibrotic segment with a spatulated, tension-free end-to-end anastomosis is performed through a perineal incision; the catheter stays two to three weeks, and the void after removal is a different biography. Had the stricture measured 8 cm of panurethral disease with perineal scarring from lichen sclerosus, the plan changes to a one- or two-stage buccal mucosal graft — cheek mucosa heals with minimal morbidity and takes reliably on a vascularised bed. And had the same man arrived after a dashboard injury with blood at the meatus, the acute answer would be a suprapubic catheter and delayed repair at three months — never repeated blind attempts at catheterisation.
Where the exam plants its traps
Three stems dominate. "Best treatment for a 1 cm bulbar stricture in a fit young man" — the tempting DVIU distractor loses to excision-primary anastomosis whenever the option list includes it, because a single cut that recurs half the time is not a definitive answer for a lifetime of voiding ahead. "A patient has had two urethrotomies and recurs" — the answer is urethroplasty; each repeat DVIU halves success and adds scar. "Blood at the meatus after a pelvic fracture" — suprapubic drainage with delayed reconstruction, never a blind catheter pass. The viva then probes technique: why buccal mucosa dominates skin — thickness and resistance to recurrence, especially in lichen sclerosus where skin grafts re-stricture — and why the cheek outranks the lip. The Indian-context mark: patients frequently arrive after years of repeated optical urethrotomies at peripheral centres, a scarred field by the time they reach a reconstructive surgeon.
Frequently asked questions
Which studies define a urethral stricture before surgery?
Uroflowmetry to quantify obstruction, then retrograde urethrogram and micturating cystourethrogram together — the ascending study shows the distal margin, the descending study the proximal extent, and only the combination gives true length.
Why is repeated DVIU discouraged?
Optical urethrotomy succeeds durably in only about half of even well-selected short bulbar strictures, and each recurrence treated by another cut halves the chance again. After one failed DVIU, the durable answer is urethroplasty.
What is the gold-standard operation for a short bulbar stricture?
Excision and primary anastomosis for strictures up to about 2 cm — complete removal of scarred urethra with a spatulated, tension-free end-to-end join — achieving above 90 per cent success in experienced hands.
How is a pelvic fracture urethral distraction injury managed?
Acute suprapubic catheterisation (avoiding blind urethral instrumentation), then delayed realignment or anastomotic urethroplasty about three months later, once the pelvic haematoma resolves. Most injuries are definitively repaired by the perineal route. For patients unfit or unwilling for urethroplasty, regular clean self-catheterisation keeps the lumen patent and postpones the next operation.