A curved penis is common, and a slight bend during erection is completely normal. When curvature becomes severe enough to cause pain, make sex difficult, or get progressively worse, it’s usually caused by a condition called Peyronie’s disease. Several treatments can reduce curvature, ranging from traction devices you use at home to injections and surgery, depending on how severe the bend is and whether the condition is still changing.
What Causes Penile Curvature
The penis is wrapped in a tough, elastic sheath called the tunica albuginea. In Peyronie’s disease, small injuries to this sheath, typically from the bending and buckling forces of sex, trigger an abnormal healing response. Instead of repairing normally, the body deposits excess collagen and forms a hardened plaque at the injury site. That plaque doesn’t stretch the way healthy tissue does, so when the penis fills with blood during an erection, the plaque side can’t expand evenly. The result is a bend toward the scar, sometimes with indentation, narrowing, or shortening.
The underlying problem is a runaway scarring process. Cells called myofibroblasts, which normally help wounds close, stick around longer than they should and keep producing collagen faster than the body can break it down. A signaling molecule called TGF-beta drives this cycle, and it’s found in elevated levels in Peyronie’s plaques. Over time, the scar hardens and the curvature can worsen or stabilize.
Not all curvature comes from Peyronie’s. Some men have congenital curvature, a bend that’s been present since puberty and doesn’t involve any palpable plaque or scarring. This type doesn’t change over time and typically becomes noticeable only when erections become frequent during adolescence. A doctor can usually distinguish between the two based on your history alone: if the curve appeared or worsened in adulthood, especially with pain, it points to Peyronie’s.
When Treatment Is Recommended
Peyronie’s disease has two phases. The active phase involves ongoing pain during erections and curvature that’s still changing. This phase typically lasts 6 to 18 months. The stable phase begins once pain has resolved and the curvature hasn’t changed for at least three months. Most treatments, particularly surgery and injections, are recommended only after the disease has stabilized, because intervening during the active phase risks treating a moving target.
The American Urological Association recommends that doctors assess curvature degree, whether it interferes with sex, whether there’s pain, and how much distress it causes. Injectable treatments are considered appropriate for stable disease with curvature between 30 and 90 degrees in men who can still get erections. Milder curves that don’t interfere with sex often don’t need treatment at all.
Traction Devices
Penile traction therapy uses a mechanical device to apply a gentle, sustained stretch to the penis over weeks or months. The RestoreX device is the most studied option. In clinical trials, men who used the device for about 30 minutes a day saw curvature improvements of roughly 17 to 21 degrees after six months, representing a 33 to 36 percent reduction. Traction is noninvasive and can be used during the active phase of the disease, making it one of the few options available before the condition stabilizes.
The commitment is real. You need consistent daily use over several months to see meaningful results. It works best for moderate curves and is sometimes used alongside other treatments to preserve or add penile length.
Injectable Treatment
Collagenase clostridium histolyticum (sold as Xiaflex) is the only FDA-approved injection for Peyronie’s disease. It works by breaking down the excess collagen in the plaque. Treatment involves a series of injections given in a doctor’s office, typically up to eight sessions spaced over several months. Between injections, a doctor physically “models” the penis (bending it in the opposite direction of the curve) and you’re asked to do the same at home.
The results depend on the treatment protocol. In a study using an optimized approach, 94 percent of men who completed treatment achieved at least a 20 percent reduction in curvature, and 60 percent achieved at least a 50 percent reduction. The median improvement was about 27.5 degrees, or roughly a 41 percent correction. Bruising and hematomas are the most common side effects, reported in over half of patients with more aggressive protocols, though these don’t appear to affect long-term erectile function or sensation.
Cost varies widely. The manufacturer offers a copay assistance program, and most men with eligible commercial insurance pay nothing out of pocket for the drug itself. However, that doesn’t cover office visit charges or injection administration fees, which can add up over a full treatment course. The program excludes Medicare, Medicaid, and VA coverage.
Surgical Options
Surgery is reserved for men with stable Peyronie’s disease whose curvature is severe enough to prevent sex or who haven’t responded to other treatments. There are three main approaches, chosen based on the degree of curvature and whether erectile function is intact.
Plication
This is the simplest procedure. The surgeon places stitches on the longer side of the penis (opposite the plaque) to cinch the tissue and straighten the shaft. It’s reliable and has a low complication rate, but it does shorten the penis slightly because you’re compressing the longer side rather than lengthening the shorter side. Recovery typically requires six weeks of no sexual activity of any kind, including masturbation.
Plaque Excision and Grafting
For more severe curvature, a surgeon can cut into or remove the plaque and patch the gap with a graft, either from your own tissue or a processed biological material. This approach corrects the curve without shortening the penis and in some cases adds a small amount of length. Studies show statistically significant improvement in curvature, with success defined as getting the residual bend under 20 degrees.
Penile Implant
When Peyronie’s disease is combined with erectile dysfunction that doesn’t respond to medication, an inflatable penile implant can solve both problems at once. The implant itself provides rigidity, and the surgeon straightens the penis by forcibly bending it against the plaque while the implant is inflated. In one study, this technique reduced curvature from an average of 48 degrees to about 11 degrees, with 87.5 percent of men ending up with less than 15 degrees of residual curve. No complications were reported over a follow-up period averaging about two and a half years.
Oral Supplements Don’t Work Well
Vitamin E is one of the most commonly prescribed initial treatments for Peyronie’s disease, but randomized controlled trials have consistently failed to show improvement in curvature, plaque size, or sexual satisfaction, whether used alone or combined with other therapies. Another oral supplement, para-aminobenzoate, showed some ability to reduce plaque size in one small trial but had no effect on curvature and comes with potentially severe side effects.
Despite weak evidence, these are still frequently recommended as first-line treatments, partly because they’re inexpensive and low-risk. If you’ve been taking vitamin E for months without improvement, the research suggests it’s unlikely to help and you may benefit from discussing more effective options.
Congenital Curvature Is Treated Differently
If your penis has always curved the same way since puberty and there’s no palpable hard spot or plaque, you likely have congenital curvature rather than Peyronie’s disease. This type doesn’t respond to injections or traction because there’s no scar tissue to target. The curve comes from uneven development of the tissue layers themselves. If it’s bothersome enough to affect sexual function, plication surgery is the standard correction, with the same six-week recovery period. Many men with congenital curvature never need treatment because the bend doesn’t worsen and doesn’t interfere with sex.