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A penile prosthesis is a highly effective treatment option for erectile dysfunction (ED) that has not responded to other therapies. While it offers excellent satisfaction rates, there are several potential downsides that patients should be aware of before proceeding with implantation.
The primary disadvantages of penile prostheses include:
Invasive Surgical Procedure: Implantation requires surgery with associated risks of infection, bleeding, and anesthesia complications. According to the 2025 EAU Guidelines, careful surgical technique with appropriate antibiotics has reduced infection rates to 2-3% for first-time implants in low-risk patients at high-volume centres, and implants with an antibiotic or hydrophilic coating may lower this to 1-2% [1].
Mechanical Failure: Device malfunction can occur over time. The 2025 EAU Guidelines report mechanical failure rates below 5% after five years for the most commonly used three-piece implants [2]. When failure occurs, additional surgery is required for replacement.
Irreversibility: An implant is best thought of as permanent. If it is ever removed, other ED treatments are unlikely to work reliably afterward [3].
Altered Sensation: Some men notice changes in sensation after implantation: the head of the penis may not fill as it did before, and intercourse may feel less natural at first, which can improve with time [12]. Overall satisfaction remains high: 92-100% of patients with appropriate counselling, according to the EAU Guidelines [4].
Shortened Penis Length: Penile shortening is a recognized complication. The EAU Guidelines note that shortening is the main cause of dissatisfaction after penile prosthesis implantation [5].
Cost: The procedure is expensive, with significant costs for the device, surgical procedure, and hospitalization. Insurance coverage varies widely.
Need for Device Operation: Inflatable prostheses require manual activation and deactivation, which some patients may find inconvenient or unnatural.
Revision Surgery: The potential need for revision surgery due to complications or device failure must be considered. In a meta-analysis of 12 studies with more than 20,000 men, about 87% of inflatable implants were still working at 5 years and about 77% at 10 years [6].
How to reduce regret: set expectations before surgery
Satisfaction with a penile implant is high when patients are counseled before surgery [8]. Talking through these points with your urologist beforehand helps avoid disappointment:
- Length: an implant restores rigidity; it does not add length. Some men feel their erect penis is shorter than their natural erections were years ago [11].
- The head of the penis: an implant usually does not make the glans firmer [11].
- Permanence: an implant is best thought of as permanent; if it is removed, other ED treatments are unlikely to work reliably afterward [11].
- Your partner: the AUA guideline says the man and his partner should be counseled on what to expect after surgery [11]. Including the partner in the consultation is a practical step [12].
In a small randomized study, structured psychosexual counseling before and after surgery led to better erotic function and satisfaction scores [13].
From the Guidelines
The 2025 European Association of Urology (EAU) Guidelines on Sexual and Reproductive Health say that a penile prosthesis "may be considered in patients who i) are not suitable for different pharmacotherapies or prefer a definitive therapy; and, ii) do not respond to other treatment modalities" [7]. On satisfaction, the guidelines state that "prosthesis implantation has one of the highest satisfaction rates (92-100% in patients and 91-95% in partners) among the treatment options for ED with appropriate counselling" [8]. On complications: "The two main complications of penile prosthesis implantation are mechanical failure and infection." The guidelines report mechanical failure rates "of < 5% after 5 years of follow-up" for the most commonly used three-piece devices, and that careful surgical technique with appropriate antibiotic prophylaxis "reduced infection rates to 2-3% with primary implantation in low-risk patients and in high-volume centres" [9]. The guidelines' recommendation reads: "Implant a penile prosthesis if other treatments fail or depending upon patient preference." "Patients should be fully informed of the benefits and harms associated with the procedure" [10].