Erectile dysfunction after prostate surgery

Erectile dysfunction after a radical prostatectomy is different from the ED this site otherwise covers. The cause is known, the timeline is long, and the standard first-line treatment underperforms for reasons that are entirely predictable.

Almost everything written for a general audience assumes your problem is vascular. If you have had prostate surgery, it probably is not — or not only. This page is about what actually applies.

Why the surgery causes it

The nerves that trigger an erection — the cavernous nerves, carried in the neurovascular bundles — run immediately alongside the prostate. There is no way to remove the prostate without disturbing them.

Even when a surgeon performs a nerve-sparing procedure and the nerves are left anatomically intact, they undergo what is called neuropraxia: a temporary loss of function from stretching, traction, or thermal injury during the operation. The wiring is still there. It has stopped conducting properly.

The timeline nobody warns you about properly

Nerve recovery is slow. Improvement typically continues for up to two years, and sometimes beyond. Men who are told to expect a few months, and who then judge themselves against that, frequently conclude they have failed when they are simply early.

How much you recover depends on things largely fixed before you woke up: your erectile function before surgery — the single strongest predictor — your age, whether the nerve-sparing was bilateral, unilateral, or not possible at all, and the experience of your surgeon.

Penile rehabilitation: the theory, and the honest evidence

You will likely be offered a penile rehabilitation programme. The reasoning is sound and worth understanding.

Erectile tissue depends on regular oxygenation, which normally comes from spontaneous erections — including the ones during sleep. Take those away for a year and the tissue becomes hypoxic, collagen is deposited, and fibrosis develops. Fibrotic tissue holds blood less well and is less elastic, which can cause veno-occlusive dysfunction and a loss of length. The theory is that inducing erections early keeps the tissue healthy while the nerves recover.

That does not make it pointless. Being able to have sex during the recovery years has value on its own terms, independent of whether it changes the endpoint. But you should know which claim is which when you are deciding how much money and effort to spend.

What actually works, in order

PDE5 inhibitors — worth trying, expect less early

Still the usual starting point. Two things differ from general use: response is lower while the nerves are recovering, and a higher dose is often needed. Do not conclude they have failed on a single early attempt — guidance generally suggests several trials at an adequate dose before drawing conclusions. Tadalafil is frequently chosen here because a daily low dose removes the timing question during a period when spontaneity is already difficult.

Vacuum erection devices — the tissue-preservation tool

A vacuum device draws blood into the penis mechanically, requiring no nerve signal at all. That makes it useful from very early on, both for sex and for the oxygenation rationale above. It is also the option most commonly recommended specifically for preserving penile length after surgery.

Injections — the one that reliably works

This is the part that too often goes unmentioned until a man has spent a year concluding nothing works.

Implants — after recovery has plateaued

If two years have passed with no adequate response to pills, injections, or a device, a penile implant has the highest satisfaction rates of any ED treatment. It is deliberately last because it is irreversible — but post-prostatectomy men are one of the groups most consistently glad to have had one.

Things that change, permanently, and are not ED

Several post-surgical changes get mistaken for erectile dysfunction, or quietly worried about because nobody named them beforehand.

• Dry orgasm. The prostate and seminal vesicles produced the fluid. With them removed there is no ejaculate. This is universal, permanent, and expected — and it does not mean the orgasm itself is gone.
• Orgasm without an erection is still possible. The nerves for sensation and orgasm are not the same as those for erection. Many men can climax well before erections return.
• Climacturia — leaking a little urine at orgasm. Affects a minority, is often temporary, and improves with pelvic floor work.
• Penile shortening. Common, related to the fibrosis described above, and part of why length-preservation strategies are discussed early.
• Altered orgasm sensation. Frequently reported. Usually settles.

What to ask, and when

1. 1Before surgery: was nerve-sparing possible, on one side or both? Ask directly, and ask what that implies for your odds.
2. 2Before surgery: do I want to bank sperm?
3. 3At 6 weeks: what is the rehabilitation plan, and what is the evidence for the specific version you are recommending?
4. 4At 3 months: if pills are not working, can I try injections now rather than waiting?
5. 5At 6–12 months: is my response improving, and what does that suggest about the trajectory?
6. 6At 18–24 months: if this is as far as recovery goes, what are the permanent options?

The thing worth holding onto

Post-prostatectomy ED has the most predictable cause of any form of erectile dysfunction, and one of the widest ranges of effective treatment. The failure mode is almost never that nothing works — it is that a man tries the pills, finds they do not work at three months, and never learns that the option which does not depend on his damaged nerves exists.

If that is where you are, the treatment ladder below the pills is where to look next.