Will the sphincter fail?

How long do devices last?

A 2026 systematic review and meta-analysis of the larger male series estimated device survival of about 72% at five years and 56.7% at ten.¹ The largest single-centre series, 1,082 implants at the Mayo Clinic, found freedom from secondary surgery of about 74% at five years and 57% at ten — strikingly close agreement between two very different methods.²

These are pooled figures from heterogeneous cohorts, not an expiry date stamped on your device. Plenty of men go fifteen years without anything being done. But roughly four men in ten will have needed a further operation by year ten, and that belongs in the conversation before the first one.

Why do sphincters need revision?

Four reasons, and they are not equally likely.

In the 2026 pooled analysis, mechanical failure ran at about 12.3%, infection 4.5%, urethral erosion 6.8% and urethral atrophy 8.1%.¹ Mechanical failure means the device itself — a leak in the fluid system, a pump that stops cycling. Erosion means the cuff has worn through the urethral wall, and it is the one that requires the device to come out.

Risk is not evenly spread. Previous radiotherapy, previous urethral surgery, diabetes and previous sphincter surgery all raise it.³⁴

The fragile urethra: who carries the higher risk

This section exists because too many men are given a pooled complication rate that was never calculated on someone like them.

Urethral stricture disease matters because it usually marks a urethra that is already scarred or poorly supplied with blood — and that tissue is more vulnerable to erosion under a cuff.⁵ Reviews of high-risk implantation consistently name the same four features: previous urethral stricture, previous urethroplasty, radiotherapy, and previous sphincter surgery.³⁴⁶

The clearest evidence concerns previous urethroplasty. In a prospective study of 105 men, prior urethroplasty tripled the risk of the device having to be removed, and raised erosion from 8.0% to 23.3% — although continence itself remained good in those whose device stayed in.⁷ A 2026 systematic review and meta-analysis reached the same conclusion, with a stronger signal after transecting repairs than after non-transecting ones.⁸ A fifteen-institution cohort put numbers on that difference: complications requiring removal in 56.2% after transecting urethroplasty against 23.5% after non-transecting.⁹

That is a large difference and it is the sort of thing you can only know by asking which operation you had.

Not all the stricture data point the same way. In a 147-patient series, a history of anastomotic stricture did not independently predict re-operation, though continence was somewhat lower.¹⁰ The mixed signal probably reflects how different these strictures are from one another — in type, severity, how many times they have been treated, and whether the urethra was cut across or preserved.

Can anything be done about a fragile urethra?

Yes, and it is usually a change of technique rather than an abandonment of the operation.

When the urethra is compromised, surgeons modify where and how the cuff sits: transcorporal placement, moving the cuff to a different level, downsizing it, using a lower-pressure balloon, or deactivating the device at night.³⁴¹¹

Transcorporal placement has the best published experience. In one series of genuinely difficult cases — after previous surgery, radiotherapy, atrophy or erosion — 13 of 17 men were dry or socially continent.¹² A longer-term high-risk cohort reported 78.8% social continence with mean survival to removal of 83 months.¹³ A refined transalbugineal variant reported no urethral injury during surgery, one erosion, and 76.8% social continence at five years.¹⁴

Those results are promising rather than proven. Almost all of this work is single-centre, retrospective and highly selected, which supports feasibility more strongly than superiority.⁴¹⁴

Does previous radiotherapy change the numbers?

Yes, and you should be told before rather than after.

The 2025 BAUS consensus states that men who have had pelvic radiotherapy face a higher risk of urethral erosion and atrophy, with revision rates of up to 30% in that group. It also puts the sphincter ahead of the sling in two situations that reached formal agreement: previous radiotherapy, and leakage that is moderate to severe. It does not rule the sling out on severity alone — the one group it says should not be offered a sling is men with a previous urethral stricture.²²

That does not make the operation unwise after radiotherapy. It makes the counselling different, and it is a reason to have it done somewhere that does a lot of them.

Does failure mean I go back to where I started?

No, and this is worth stating plainly.

Most mechanical failures can be revised — the faulty component is replaced and the device works again. Infection or erosion is different: the device has to come out, the urethra is allowed to heal, and re-implantation is considered later.

What to do with the urethra at that point is genuinely unsettled. A systematic review of 277 men concluded that mild erosions can often be managed with catheter drainage and a suprapubic tube, while severe ones are likelier to need surgical repair.¹⁵ Another review found the published evidence too sparse and inconsistent to define a single best strategy.¹⁶ Anyone who tells you this part is standardised has not read it.

How dry can I expect to be in the meantime?

Across a meta-analysis of 1,271 men, complete pad-free dryness was about 52% and social dryness of nothing or one pad a day about 82%.¹⁷ Pooled and multicentre data put social continence at roughly 75 to 82% and complete dryness nearer 50 to 60%.¹⁸¹⁹

Ask which definition sits behind any figure you are quoted. It is the single most useful question in this whole conversation.

Is satisfaction still high despite revisions?

Generally, yes. Long-term series report high satisfaction among men with a working device, and satisfaction stays high even where perfect dryness is never achieved.²⁰²¹

The comparison that matters is not perfect natural continence against an implant. It is your current burden against likely improvement, plus the honest possibility of further surgery down the line.

Bottom line

An artificial sphincter is not a maintenance-free cure. It is a highly effective continence device with a meaningful chance of revision over the years, and for most men with moderate-to-severe stress leakage that trade is still worth making.

I would rather tell you about revision before the operation than after it. Roughly seven in ten devices are still working at five years and around half at ten, and most failures can be revised.

Two things change that arithmetic, and both are knowable in advance. If you have had radiotherapy, the risk is higher. If you have had a urethroplasty — and particularly one where the urethra was divided — the risk of the device eventually having to be removed is several times higher, and I will say so before we book anything rather than afterwards. Neither is a reason not to have the operation. Both are reasons to have it done by someone who has seen the problem before, and to have the technique chosen around your urethra rather than around habit.

Worth reading alongside: what the operation involves and how well it works, the sling-versus-sphincter comparison, and — if strictures are part of your history — why they keep coming back and what can be done about them.