Can Surgery Cause Erectile Dysfunction? Prostate Surgery and ED Explained

Surgery — particularly prostate surgery — is one of the most common causes of acquired erectile dysfunction (ED). While this can be deeply distressing, it is important to know that post-surgical ED is often temporary, and effective treatments are available. This guide explains why surgery causes ED, what recovery typically looks like, and the full range of treatment options available.

Why Does Surgery Cause Erectile Dysfunction?

ED after surgery most commonly occurs following radical prostatectomy — surgical removal of the prostate gland, typically performed for prostate cancer. Two small nerve bundles called the cavernous nerves run along each side of the prostate. These nerves carry signals from the brain to the penis that control blood flow into the erectile tissue.

Even when the cancer has not spread to these nerves and full removal is not required, the proximity of the cavernous nerves to the prostate means they are at risk of stretching, bruising, or inadvertent damage during the procedure. This trauma can disrupt the nerve signals needed for an erection, causing both temporary and, in some cases, permanent ED.

Nerve-Sparing Prostatectomy

Where clinically appropriate, surgeons may perform a nerve-sparing prostatectomy, which attempts to carefully dissect and preserve the cavernous nerves. This approach can significantly reduce the risk of post-surgical ED, though it is not always oncologically safe (if cancer has spread close to the nerves) and not all men are suitable candidates.

What Is the Timeline for Recovery?

Recovery varies enormously depending on age, pre-operative erectile function, overall cardiovascular health, and whether nerve-sparing surgery was performed. Younger men with good pre-surgical erectile function tend to recover better than older men or those with pre-existing cardiovascular risk factors.

Treatment Options for Post-Surgical ED

Oral Medication (PDE5 Inhibitors)

Your prescriber may recommend sildenafil, tadalafil, or vardenafil. These drugs increase blood flow to the penis and are often used as part of a penile rehabilitation programme — regular use (daily low-dose tadalafil or on-demand sildenafil) in the months after surgery is thought to preserve erectile tissue and support nerve recovery, even if erections are not yet functional. For a comparison of available medications, see our guide to Viagra vs Cialis vs Levitra vs Stendra.

Pelvic Floor Exercises

Pelvic floor exercises (Kegel exercises) have been shown to improve erectile function following prostate surgery. They should be started as soon as possible post-operatively — ideally before surgery where planned. See our guide to lifestyle changes for erectile dysfunction for a full Kegel exercise guide.

Vacuum Erection Devices

A vacuum erection device (VED) uses negative pressure to draw blood into the penis, creating an erection that is then maintained with a constriction ring. VEDs can be used as a form of penile rehabilitation or as a treatment in their own right.

Penile Injection Therapy

Alprostadil injections directly into the penis cause vasodilation and an erection independent of nerve function — making this option useful for men with nerve damage where oral medications may be less effective.

Surgical Implants

If both cavernous nerves were removed during surgery and other treatments have not been successful, a surgically implanted penile prosthesis (inflatable or semi-rigid) can provide a reliable erection on demand. This is typically considered after other options have been exhausted.