The choice of penile implant type is a clinically relevant decision in the surgical planning of Peyronie’s disease and should consider factors such as anatomy, sexual function, patient expectations, and the limitations of each device.
What is a penile implant and when is it indicated in Peyronie’s disease
A penile implant is a device placed inside the penile cylinders to provide sufficient rigidity for sexual intercourse. In Peyronie’s disease, it may be indicated when the curvature is associated with insufficient erection or a deformity that prevents sexual function.
Its purpose is to help restore sexual function in selected cases by enabling adequate rigidity for intercourse. The device is not primarily intended to alter penile aesthetics.
Why Peyronie’s disease may lead to the need for an implant
Peyronie’s disease is caused by the formation of fibrous plaques in the tunica albuginea of the penis. This plaque reduces tissue elasticity and can cause the penis to curve during erection.
In some men, the curvature is mild and does not prevent sexual intercourse. However, if the deformity becomes more severe, penetration becomes difficult or impossible, and the erection loses the necessary rigidity.
Besides the physical limitation, the condition can have an emotional impact. Many men begin to avoid intimacy, feel insecure, or fear worsening the situation.
In these cases, surgery for Peyronie’s disease with a penile implant may be a recommended treatment option.
When treatments cease to be effective
Before considering an implant, it is important to try other less invasive treatments, such as:
- Oral medications (Sildenafil, Tadalafil, and similar);
- Cavernous injections (Alprostadil, Verapamil, among others);
- Complementary therapies (penile exercises, vacuum devices, and others).
The implant as a structural treatment
In severe cases of Peyronie’s disease, fibrosis and curvature can alter the penile structure to the point of preventing functional erection. When this occurs, a penile implant may be indicated to restore rigidity, stability, and conditions for sexual intercourse.
Clinical treatments are not always effective, as they do not address this structural alteration.
The penile implant, when placed inside the penis, can help provide sufficient rigidity and improve the stability of the penile axis in selected cases, contributing to sexual function when clinically indicated.
Types of penile implants available
There are different types of penile implants. Each has its own characteristics, advantages, and limitations. The choice depends on the patient’s profile and expectations.
Malleable or semi-rigid penile implant
The malleable implant is a mechanically simple option: composed of metal rods coated with silicone, the device is inserted inside the penis and maintains constant rigidity. It is manually positioned for sexual intercourse or adjusted for daily comfort.
The main limitation of the semi-rigid implant is naturalness. Since the penis remains somewhat rigid at all times, there may be less discretion.
Two-piece inflatable penile implant
The two-piece inflatable implant consists of cylinders and a reservoir, and a pump usually positioned in the scrotum. Activating the pump transfers saline from the reservoir to the cylinders, increasing rigidity. Deactivating the pump returns the penis to a partially flaccid state.
This option may provide a perception of greater naturalness compared to the malleable implant, depending on patient adaptation and case characteristics.
However, as it is a hydraulic system, it may be more prone to mechanical failures in its components compared to the malleable implant. Therefore, it may require maintenance and replacement over time.
Three-piece inflatable penile implant
The three-piece inflatable implant has separate cylinders, a scrotal pump, and an abdominal reservoir. In this model, the reservoir is placed in the abdomen.
Its operation is similar to the two-piece inflatable model: the patient activates the pump to transfer fluid to the cylinders, creating rigidity. Then, the system is deactivated to return the penis to a flaccid state.
This model may allow a simulation closer to a natural erection, with greater control over the timing of rigidity and more discretion when the device is deactivated. However, due to its complexity and more components, it may be more prone to mechanical failures.
Practical differences between implants
In practice, the differences between implant types lie in naturalness, comfort, control, and complexity of use. Therefore, it is necessary to choose the penile implant most suitable for each specific case.
| Type of implant | Characteristics | Advantages | Limitations |
|---|---|---|---|
| Malleable or semi-rigid | Silicone-coated rods | Simpler and without hydraulic system | Less natural and discreet, as it maintains constant penile rigidity |
| Two-piece inflatable | Cylinders with reservoir integrated in the scrotum and activation pump | More natural than malleable. Allows activation and deactivation of rigidity | Higher risk of mechanical failures than malleable. Patients with limited hand strength may have usage restrictions |
| Three-piece inflatable | Cylinders, scrotal pump, and separate abdominal reservoir | Closer to natural erection, with greater control and discretion | More complex system, with more components prone to failure. Requires motor ability to operate the pump |
How Peyronie’s disease influences implant choice
In Peyronie’s disease, treatment must consider not only rigidity but also deformities caused by the fibrous plaque.
Degree of curvature and deformity
A severe curvature can make penetration difficult or impossible, regardless of sexual position, and may cause discomfort to the partner. The curvature can also worsen functional difficulties during intercourse and contribute to insecurity and poorer erectile performance.
Presence of erectile dysfunction
In Peyronie’s disease, erection difficulties may be associated with various factors, including vascular changes. When erectile dysfunction is significant and does not respond satisfactorily to conservative options, a penile implant may be considered after individualized urological evaluation.
Penile shortening and thinning areas
Peyronie’s disease can cause shortening and thinning of the penis during erection. However, the implant alone does not restore these features. Nevertheless, if the surgical technique allows tissue expansion, it is possible to size the device according to the expanded penis, respecting the patient’s anatomical limits.
Does the implant correct Peyronie’s curvature?
The penile implant is not intended to treat curvature but to restore rigidity when the erection is no longer functional. However, in Peyronie’s disease cases, for this rigidity to allow adequate sexual intercourse, it is necessary to address the tissues affected by fibrosis.
During surgery, penile reconstruction may be necessary depending on the deformity characteristics and intraoperative evaluation. This type of procedure should be performed by a urologist with appropriate training and experience in this approach.
At this stage, the surgeon may release and expand tissues compromised by fibrosis. This step can help address the structural alteration caused by Peyronie’s disease before implant placement, promoting penile alignment and creating more suitable anatomical conditions for device implantation when clinically indicated.
After reconstruction, the penis is measured with the tissues already expanded. Only then does the surgeon determine the appropriate implant size, respecting the model previously chosen with the patient. In other words, the final device size is adapted to the actual anatomy found after expansion.
Next, the inflatable or malleable implant is placed inside the penis, aiming to preserve penile structures as much as possible. The device is then tested to confirm adequate rigidity, positioning, and function. After this verification, the surgery is completed.
Limits of correction
Tissue expansion depends on the characteristics of Peyronie’s disease and the individual anatomy of each patient. Therefore, the degree of possible correction varies case by case.
Generally, expansion must respect the anatomical limits of the penis, including preservation of the nerves responsible for sensitivity. When these structures are not properly preserved, there may be alteration or loss of sensation.
It is important to note that penile implants generally should not significantly alter sensation, orgasm, ejaculation, or libido, unless there is surgical risk or other patient conditions.
Who is an ideal candidate for a penile implant in Peyronie’s disease
To be a candidate for a penile implant, a diagnosis of Peyronie’s disease or erectile dysfunction alone is not sufficient. The implant is indicated when there is significant interference with sexual function and when other options no longer provide an adequate response.
The patient profiles most likely to benefit are:
- Diagnosis of Peyronie’s disease with associated erectile dysfunction;
- Failure of clinical treatments;
- Severe penile deformity.
A detailed and individualized urological evaluation helps determine if surgical treatment is appropriate for the patient.
The best penile implant for Peyronie’s disease is a personalized decision
Knowing which is the best penile implant for Peyronie’s disease requires careful evaluation. The decision depends on the curvature, presence of erectile dysfunction, penile anatomy, and patient expectations.
It is also important to understand the differences between models, with the advantages and limitations of each. This way, it is possible to identify the option that offers the best functional response for each case, avoiding rushed decisions.
Peyronie’s disease can affect sexual life and impact a man’s confidence. With appropriate urological evaluation, it is possible to discuss treatment options individually, considering functional goals, expectations, and limitations of each case.
Contact us and schedule your personalized evaluation.
