Penis enlargement surgery uses one of three main approaches: cutting an internal ligament to expose more of the penile shaft, injecting or grafting fat beneath the skin to add girth, or placing a silicone implant around the shaft. Each works differently, produces different results, and carries different risks. None are endorsed by major urology organizations for purely cosmetic use.
Ligament Release for Added Length
The most common lengthening procedure is called ligamentolysis. Inside your body, a band of tissue called the suspensory ligament anchors the base of the penis to the pubic bone. A surgeon cuts this ligament, which allows the penis to hang lower and appear longer when flaccid. It’s worth understanding what this actually changes: a portion of the penile shaft normally sits inside the body, hidden behind the pubic bone. Releasing the ligament lets more of that internal shaft drop forward.
The key limitation is that this does not increase actual penile length. It changes the visible portion in a flaccid state, but the effect on erect length is minimal to nonexistent. The Mayo Clinic notes that surgery “may add a slight appearance of increased length to the non-erect penis, but it does not change the actual length of the penis.” After the ligament is cut, many surgeons require patients to use a traction device or penile stretcher during recovery to prevent the ligament from reattaching and scarring in a shortened position, which can erase whatever gains the surgery provided.
There’s another trade-off. The suspensory ligament plays a role in erection angle. Without it, erections may point downward rather than upward, and some men report less stability during sex.
Fat Grafting for Added Girth
To increase circumference, surgeons can harvest fat from another part of your body (typically the abdomen or thighs) through liposuction, purify it, and inject it beneath the penile skin. The goal is an even layer of fat around the shaft that makes it look and feel thicker.
The problem is that injected fat doesn’t always behave predictably. The body reabsorbs a significant portion of transplanted fat over time, so initial results shrink. Worse, the fat can be absorbed unevenly, leaving lumps, nodules, or an irregular shape. A study tracking outcomes over six months found a 4.3% complication rate that included subcutaneous bleeding, hard nodules under the skin, and infection. Another found mild inflammation at the injection site in 6.3% of patients. These rates may sound low, but complications in this area can be particularly distressing and difficult to correct.
The American Urological Association has stated explicitly that fat injection for penile girth “has not been shown to be safe or efficacious.” That’s a notably strong position for a professional medical body to take.
Silicone Implants
A newer option involves placing a crescent-shaped silicone sleeve beneath the skin of the penis. The best-known version is the Penuma implant, which has received FDA clearance for “cosmetic correction of soft tissue deformities.” The surgeon makes an incision, creates a pocket between the skin and the deeper tissue of the shaft, and slides the implant into place. It wraps around the top and sides of the penis but leaves the underside open so it doesn’t compress the urethra.
The implant adds both girth and some flaccid length. Unlike fat grafting, the results don’t shrink over time because the silicone maintains its shape. However, it’s a more invasive surgery, and complications can include infection, implant shifting, erosion through the skin, or the need for removal. Because it’s a permanent foreign object in a sensitive area, any complication typically requires another surgery to fix.
What Results to Realistically Expect
This is where many men feel disappointed. There is not strong clinical evidence showing large, reliable gains from any of these procedures. The Mayo Clinic notes that “there aren’t enough studies of penis-enlargement surgery to give an accurate picture of risks and benefits,” and at best, surgery provides “a slight increase in girth.” The AUA considers both ligament release and fat injection unproven in terms of both safety and effectiveness.
Lengthening procedures may add a noticeable difference to flaccid appearance, but the change during erection is typically negligible. Girth procedures can produce a visible difference, but the results are inconsistent and may require repeat procedures as fat is reabsorbed. Implants offer the most predictable cosmetic change, but at the highest cost and surgical risk.
Cost and Insurance
These procedures range from under $10,000 to more than $20,000 depending on the technique. Fat grafting tends to fall at the lower end, generally under $10,000. Ligament release surgery ranges widely from under $10,000 to over $20,000. The Penuma implant typically costs more than $15,000.
Insurance almost never covers these procedures because they’re considered cosmetic. The exception is when a doctor determines the surgery is medically necessary for a diagnosed condition like micropenis or buried penis, in which case some insurers will cover it.
Risks Worth Weighing
Beyond the specific complication rates mentioned above, all penile surgeries carry risks common to any operation: infection, scarring, and reactions to anesthesia. But the risks unique to this area deserve particular attention. Nerve damage can reduce sensation permanently. Scarring can cause pain during erections or change the shape of the penis in ways that are worse than the original concern. Ligament release can destabilize erections. Fat grafting can leave disfiguring lumps. Implants can shift, erode, or require removal.
The psychological dimension matters too. Studies on cosmetic penile procedures consistently show that dissatisfaction after surgery is common, sometimes because the results were modest, sometimes because complications created new problems. Many urologists recommend that men concerned about penis size first speak with a therapist who specializes in body image, since the vast majority of men who seek enlargement surgery fall well within the normal size range.