A slight curve to the penis is normal and rarely needs treatment. When curvature becomes severe enough to cause pain or interfere with sex, typically at 30 degrees or more, several proven treatments can straighten it. The right approach depends on what’s causing the curve, how severe it is, and whether you also have difficulty getting or maintaining erections.
What Causes Penile Curvature
There are two main reasons a penis curves noticeably. The first is congenital curvature, meaning you were born with it. This results from uneven development of the tough tissue (called the tunica albuginea) that surrounds the erectile chambers. It affects somewhere between 1% and 10% of men, and most don’t notice it until puberty, when erections become more frequent. The curve is usually downward, though it can bend sideways or, less commonly, upward.
The second and more common cause is Peyronie’s disease, where scar tissue (plaque) forms inside the penis after repeated minor injuries, often from sex or physical activity. This plaque prevents the tissue from stretching evenly during an erection, pulling the penis toward the scarred side. Peyronie’s most often appears between ages 50 and 60, though younger men can develop it too. Prevalence estimates range widely, from under 1% to over 11%, largely because the condition is underdiagnosed. Men with diabetes or erectile dysfunction are at higher risk.
When Treatment Is Necessary
If curvature is mild, painless, and doesn’t get in the way of intercourse, treatment isn’t needed. A curve greater than 30 degrees, roughly the angle between 12 and 1 on a clock face, is the threshold where sex often becomes painful or physically difficult. At that point, correction is worth pursuing.
For Peyronie’s disease specifically, the timing of treatment matters. The disease has two phases: an active (acute) phase and a stable (chronic) phase. During the active phase, the plaque is still forming. You may notice the curve changing, feel pain during erections, or find that the bend is getting worse over time. Most interventions, especially surgery, are reserved for after the disease stabilizes, meaning the curvature hasn’t changed for at least three to six months and erection pain has resolved. Jumping into treatment too early risks operating on a moving target.
Injection Therapy
For men with stable Peyronie’s disease and a curve between 30 and 90 degrees who can still get erections, injections of an enzyme that breaks down scar tissue are the main non-surgical option. The treatment involves up to four cycles spaced about six weeks apart. Each cycle includes two injections given one to three days apart, followed by a manual modeling procedure where a clinician physically bends the penis to help reshape the softened plaque. You’ll also be instructed to do gentle stretching exercises at home between cycles.
This approach works best for moderate curvature. It won’t eliminate a severe bend entirely, but it can reduce the curve enough to restore comfortable sexual function. It is not appropriate for men with calcified (hardened) plaques or curvature beyond 90 degrees.
Traction Devices
Penile traction devices apply a gentle, sustained stretch to the penis over weeks or months. The evidence supporting them comes primarily from studies on penile rehabilitation, where 30 to 60 minutes of daily use over five months produced measurable improvements in length and function. Some urologists recommend traction as a standalone treatment for mild curvature or as a complement to injections or surgery to help preserve length.
Traction requires consistency. Most protocols call for daily use, five to seven days a week, for several months. Results are gradual. This is a reasonable option if your curvature is moderate and you want to avoid more invasive treatment, but it demands patience and commitment.
Shockwave Therapy
Low-intensity shockwave therapy is sometimes marketed for Peyronie’s disease, but the evidence is clear on one point: it does not reduce curvature. Some studies actually showed numerical worsening of the bend. Where shockwave therapy does show benefit is in managing the pain that accompanies the active phase of Peyronie’s. If pain is your primary complaint and the curve itself isn’t severe, this may provide relief, but it won’t straighten anything.
Oral Medications
You’ll find references to vitamin E, pentoxifylline, and other oral treatments for Peyronie’s disease. The American Urological Association guidelines do not endorse oral therapies as effective for reducing curvature. While some of these medications have been studied, none have shown consistent, meaningful results in straightening the penis. If a provider recommends one, it’s likely aimed at managing symptoms during the active phase rather than correcting the curve itself.
Surgery for Penile Curvature
Surgery is the most reliable way to correct significant curvature, whether congenital or from Peyronie’s disease. There are three main surgical approaches, and the right one depends on your degree of curvature, penile length, and erectile function.
Plication
Plication is the simplest surgical option. The surgeon places permanent sutures on the longer side of the penis to shorten it, matching the shorter (curved) side and straightening the shaft. Success rates are high: one study reported complete correction in over 95% of patients. The tradeoff is some penile shortening, but in most cases it’s modest. The average measured loss is about 0.5 to 0.6 centimeters, and virtually all patients in the study found the shortening acceptable and said it didn’t affect intercourse. Plication carries a low risk of erectile dysfunction, making it the preferred option for men with good baseline erections and curvature that isn’t extremely complex.
Plaque Incision and Grafting
For more severe or complex curvature, a surgeon may cut into or remove the scar tissue directly and fill the resulting gap with a graft. This approach has the advantage of preserving penile length and can address curves that plication can’t handle well. The significant downside is a higher risk of new erectile problems afterward. In one study, 46% of men experienced a meaningful drop in erectile function following the procedure. Older age, a larger initial curve, and pre-existing blood flow issues all increase that risk. Some men also experience changes in sensation if nerves need to be moved during the surgery. This procedure is typically reserved for men with severe curvature who have strong erections going in and understand the potential tradeoffs.
Penile Implant
When Peyronie’s disease causes both significant curvature and erectile dysfunction that doesn’t respond to medication, a penile implant can solve both problems at once. The implant itself straightens the curve in 33% to 90% of cases. If residual curvature remains after the implant is placed, the surgeon can manually model (bend) the penis over the inflated device, which corrects the remaining curve 86% to 100% of the time. Patient satisfaction rates range from 72% to 100% in published studies, with modern inflatable models showing satisfaction between 86% and 91%. This is a permanent solution, and most men find the functional results worth it, though it does mean relying on a mechanical device for erections going forward.
Choosing the Right Approach
The decision tree is relatively straightforward. If your curvature is mild and doesn’t bother you during sex, no treatment is needed. If you have Peyronie’s disease that’s still changing, the priority is waiting for it to stabilize while managing pain if needed. Once stable, men with moderate curvature and good erections are candidates for injections or plication. Severe or complex curvature with good erections points toward grafting. And if erectile dysfunction is part of the picture, an implant addresses both issues simultaneously.
Congenital curvature, since there’s no scar tissue involved, is treated surgically with plication when the bend is significant enough to warrant it. Injections and traction aren’t relevant for congenital cases because there’s no plaque to target.