How to Straighten a Bent Penis: What Actually Works

Penile curvature has several proven treatments, but the right one depends on the cause, the severity of the bend, and whether erectile function is intact. The two main causes are Peyronie’s disease, an acquired scarring condition, and congenital curvature, which is present from birth but often not noticed until sexual maturity. Treatments range from injections and traction devices through to surgery, and each comes with tradeoffs in correction, recovery, and potential side effects that are worth understanding before committing to a plan.

Why the Penis Bends in the First Place

Peyronie’s disease is by far the more common reason men seek treatment for curvature. It is a connective-tissue disorder in which scar tissue, called plaque, forms in the tough sheath surrounding the erectile chambers of the penis. That plaque prevents the affected area from expanding during an erection, pulling the penis toward the scarred side and creating a visible bend.¹ The condition typically follows some form of trauma to the penis, though many men cannot recall a specific injury. Congenital curvature, by contrast, involves no plaque at all. Instead, one side of the penile tissue simply grew at a different rate during development. Men born with congenital curvature are also significantly more likely to later develop Peyronie’s disease, which suggests some overlap in the underlying tissue characteristics.²

Peyronie’s disease moves through two phases. The early, active phase is when the plaque is forming, the penis may be painful during erection, and the curvature can still be changing. In the later, chronic phase, pain usually resolves and the deformity stabilizes.³ Knowing which phase you are in matters a great deal for treatment decisions, because most surgical approaches require waiting until the curvature has stopped progressing.

Does Peyronie’s Disease Ever Improve on Its Own?

The honest answer is: sometimes, but not for most men. In one of the larger natural-history studies, about 12% of men saw some curvature improvement without treatment, 40% stayed stable, and 48% got worse. Among those who improved, the average gain was about 15 degrees of correction, while those who worsened lost an average of 22 degrees. Pain, on the other hand, resolved in the vast majority of cases regardless of what happened to the bend itself.⁴ So if the curvature is mild and you can still have comfortable sex, watchful waiting is a reasonable choice. But if the bend is severe or progressing, banking on spontaneous improvement is a gamble that the numbers do not favor.

Injections Into the Plaque

For men in the chronic, stable phase of Peyronie’s disease who want to avoid surgery, intralesional injections are the most studied non-surgical option.

Collagenase (Xiaflex)

Collagenase clostridium histolyticum, marketed as Xiaflex, is the only injection specifically approved for Peyronie’s disease by the U.S. FDA. It works by breaking down the collagen in the plaque. The landmark clinical trial showed roughly a 34% reduction in curvature with treatment, translating to an average improvement of about 17 degrees, compared with about 9 degrees in the placebo group.⁵ A shortened treatment protocol has achieved similar results while cutting costs and office visits.

Two practical factors affect how well collagenase works for a given person. First, plaque calcification matters. Men whose plaque has not calcified see substantially better outcomes, with average improvements near 28 degrees compared to only about 10 degrees in men with moderate or heavy calcification. Curvature of 60 degrees or more was also a predictor of greater percentage improvement.⁶ Your urologist can check for calcification with a simple ultrasound before recommending the treatment. Second, the side effects are real. Common reactions include swelling and bruising at the injection site. Rare but serious complications include corporal rupture and penile fracture, which is why the injections must be performed by a trained specialist and followed by a modeling procedure in the office.⁵

Verapamil

Verapamil is a calcium-channel blocker originally designed for heart conditions, but when injected directly into Peyronie’s plaque, it appears to soften the scar tissue and modestly improve curvature. In one retrospective study, more than 80% of patients reported subjective improvement in curvature, and the proportion of men able to have intercourse rose by about 36 percentage points. Only about 14% of those treated went on to need surgery.⁷ Earlier pilot work found all patients experienced plaque softening, and about 42% had measurable curvature improvement.⁸ Verapamil is less expensive than collagenase, but the evidence base is thinner and consists mostly of smaller, non-randomized studies, so the results should be interpreted with some caution.

Oral Medications and Supplements

You will find no shortage of supplements marketed at men with Peyronie’s disease. The most commonly mentioned are vitamin E, pentoxifylline, and various antioxidant blends. The evidence here is much weaker than for injections. Vitamin E alone has not been shown in rigorous trials to meaningfully change curvature. Pentoxifylline, an anti-fibrotic drug sometimes prescribed off-label, has shown more promise when combined with other agents rather than used alone.

One study tested a multimodal cocktail of pentoxifylline, propolis, blueberry extract, vitamin E, and topical diclofenac in men with early-stage disease. The group that also received pentoxifylline injections into the plaque saw a mean curvature reduction of about 10 degrees, while the oral-only group improved by about 5 degrees. Plaque volume shrank substantially in both groups, and pain resolved in roughly two-thirds of men.⁹ A separate case series reported complete resorption of plaque in some patients using a multimodal antioxidant regimen, though the authors themselves acknowledged the sample was small and called for proper randomized trials before drawing broad conclusions.¹⁰

The bottom line on oral treatments: they are most likely to help during the early, active phase of the disease and are probably best thought of as complementary rather than standalone therapies. If someone promises you that a pill alone will straighten a well-established curve, be skeptical.

Traction Devices

Penile traction therapy involves wearing a small mechanical device that applies a gentle, sustained stretch to the penis for several hours a day over weeks or months. The appeal is obvious: no injections, no surgery, and you can do it at home. A meta-analysis of available studies found a statistically significant average improvement in curvature of about 16 degrees, along with gains in both flaccid and stretched penile length.¹¹ Earlier reviews of the evidence reached similar conclusions about improvements in length and curvature compared to baseline.¹²

Traction is often used alongside other treatments rather than on its own. Some urologists recommend it before surgery to maximize length or after surgery to maintain correction. The main drawback is compliance: wearing the device for the recommended hours each day is uncomfortable, and many men struggle to stick with the regimen long enough to see the full benefit. If you can commit to it, the data suggests a real, if modest, effect on both curvature and length.

Shockwave Therapy

Extracorporeal shockwave therapy (ESWT) directs focused energy pulses at the plaque through the skin. Its best-documented benefit is pain relief. One long-term study found that all patients experienced reduced pain, with three-quarters becoming completely pain-free. About half also saw improvement in curvature, ranging from modest gains in mild curves to substantial correction in moderate ones.¹³ Another observational study confirmed significant pain reduction and improvements in erectile function domains.¹⁴

The catch is that most of these studies lack placebo controls, and the improvements in curvature are inconsistent across the literature. Professional guidelines generally recognize ESWT as useful for pain management but stop short of recommending it as a primary curvature-correction tool. If your main complaint is pain during the active phase, shockwave therapy may help. If your main problem is the bend itself, the evidence is not strong enough to rely on ESWT alone.

When Surgery Is the Right Move

Surgery remains the most reliable way to correct penile curvature, particularly when the deformity is stable and non-surgical treatments have not produced sufficient improvement. It is generally recommended once the disease has been stable for at least three to six months and the curvature is severe enough to interfere with sexual function.¹⁵ The choice of procedure depends mainly on the degree of curvature and the quality of your erections.

Plication (Shortening Procedures)

Plication involves placing sutures on the side opposite the plaque to straighten the penis by essentially folding the longer side to match the shorter side. It is the simplest surgical option and preserves erectile function well, but the tradeoff is that the penis ends up a bit shorter. How much shorter is often overstated, though. A recent study found that the perceived length loss had actually already occurred because of the disease itself, and the plication surgery did not produce statistically significant additional shortening beyond what Peyronie’s had already caused.¹⁶ That said, patients do subjectively notice the change. In one comparative study, more than half of plication patients reported penile shortening, versus under 7% of those who had a grafting procedure.¹⁷ Plication works best for men with curves under about 60 degrees and good baseline erections.

Plaque Incision and Grafting (Lengthening Procedures)

For men with more severe curvature, the plaque can be cut or partially removed and the resulting gap filled with a graft. This approach straightens the penis without shortening the longer side, making it a better option when preservation of length is a priority. The graft material varies: options include tissue from the patient’s own body (such as the tunica vaginalis or buccal mucosa from the inner cheek) and commercially processed biological grafts.

A comparison of tunica vaginalis and buccal mucosa grafts found both achieved a 90% technical success rate at two years, with residual curvatures averaging 12 and 8 degrees respectively. Erectile function scores improved in both groups after surgery.¹⁸ A more recent study comparing a synthetic polyglycolic acid graft to a porcine small-intestine submucosa graft found no difference in straightening success, but the synthetic graft was associated with higher rates of persistent erectile dysfunction and lower patient satisfaction.¹⁹ The risk of new-onset erectile difficulty is the main downside of grafting procedures, which is why they are generally reserved for men who already have solid erections.

Penile Prosthesis

When Peyronie’s disease coexists with significant erectile dysfunction that does not respond to medication, an inflatable penile prosthesis is considered the gold standard. The prosthesis itself straightens many curves simply by providing internal rigidity. When residual curvature persists after implantation, surgeons can add manual modeling, plication, or grafting during the same procedure.²⁰ In a study of men with severe curvature and erectile dysfunction, prosthesis placement alone was insufficient to correct the bend in every case, and plication sutures were added to fully straighten the penis, with no complications reported over follow-up periods of up to three years.²¹

Congenital Curvature Is a Different Situation

Men born with penile curvature face a simpler treatment landscape. There is no plaque to dissolve, no inflammatory phase to wait out, and no disease progression to worry about. If the curve is bothersome enough to interfere with sexual function or confidence, plication surgery is the standard fix and works well. In one long-term series using a modified technique, full straightening was achieved in about 93% of patients, though the median length loss was about 1.7 centimeters.²² Another study found that about 90% of men had a straight penis or minimal residual curvature after surgery, and every patient surveyed was satisfied or very satisfied with the outcome.²³

Younger men considering correction should know that the procedure is straightforward and has a long track record. An early series of men aged 17 to 29 with curves of 60 to 90 degrees found eight of ten had a successful outcome based on self-reported straightening and satisfactory intercourse, though two of those eight later needed a minor follow-up procedure for residual curvature.²⁴ Non-surgical approaches like traction or injections have no established role for congenital curvature because there is no pathological scar tissue to target.

Rehabilitation After Surgery

Post-surgical rehabilitation is an underappreciated factor in long-term outcomes. A study comparing grafting patients who used a rehabilitation protocol (involving traction, vacuum devices, and/or low-intensity shockwave therapy) to those who did not found that the rehabilitation group had significantly better erectile function scores, less penile shortening, and lower rates of curvature recurrence.²⁵ Another study used a combination of low-intensity shockwave therapy, daily tadalafil, and a vacuum device after grafting surgery and found no significant decrease in penile length postoperatively.²⁶

If your surgeon does not mention rehabilitation, ask about it. The existing evidence suggests it makes a meaningful difference in preserving both length and function after more invasive procedures.

How Curvature Gets Measured (and Why It Matters)

You may wonder how doctors settle on a number for your curve, and the answer is that measurement methods are not perfectly interchangeable. One comparison found that the gold-standard injection-assisted measurement yielded an average curvature of 42 degrees, while vacuum-assisted and photographic methods gave averages of 33 and 34 degrees respectively. The discrepancy was largest in men with concurrent erectile dysfunction or curves above 60 degrees.²⁷ This matters because treatment decisions often hinge on whether your curvature crosses specific thresholds. If your curve was measured by home photograph and your doctor is recommending an aggressive intervention, it may be worth verifying the measurement in the office using a more controlled method.

The Psychological Weight of Living With a Bent Penis

Penile curvature is not just a plumbing problem. Men with Peyronie’s disease report rates of depression far above the general population. One review found that as many as 48% of affected men reported clinically meaningful depression, and over 80% described some form of emotional difficulty. Relationship problems were reported by more than half.²⁸ Qualitative research paints an even starker picture: men have described feeling “abnormal,” “disgusting,” or like a “half man,” with many losing the confidence to initiate intimacy.²⁹

Notably, psychological distress does not track neatly with how severe the bend is. Body image concerns and sexual confidence seem to drive distress more than the degree of curvature alone. Depression prevalence in studies has ranged from about 4% to nearly 20% depending on how it was measured, but the important finding is that successful treatment of the curvature, whether surgical or non-surgical, is associated with improvements in depression and overall quality of life.³⁰ If you are dealing with this, the mental health dimension is not separate from the medical one. Addressing both tends to produce better outcomes than addressing either alone.

When Partners Are Affected Too

Curvature can cause physical discomfort for sexual partners as well. A study of patient-reported partner pain found that men whose partners experienced discomfort had significantly higher curvature, averaging about 48 degrees compared to 33 degrees in the group where partners reported no pain. Men reporting partner pain were also more likely to describe the condition as damaging their relationship and were more motivated to pursue surgical correction.³¹ This is a dimension of the condition that often goes undiscussed in the exam room, partly because the partner is rarely present and the conversation tends to focus on the patient’s anatomy. But partner comfort is a legitimate clinical consideration and can factor into treatment decisions, particularly when choosing between conservative management and more definitive surgical correction.