Penile enlargement surgery works through several distinct approaches depending on whether the goal is added length, added girth, or both. The most common technique for length involves cutting a ligament that anchors the penis to the pubic bone, allowing more of the internal shaft to hang visibly outside the body. For girth, surgeons either inject or wrap material around the shaft beneath the skin. A newer option uses a custom silicone implant placed over the shaft. None of these procedures change the total anatomical size of the penis, and real-world gains tend to be modest.
How Ligament Release Adds Visible Length
About one-third of the penile shaft sits inside the body, held in place by the suspensory ligament. This ligament connects the tough outer casing of the penis to the pubic bone, keeping the shaft at an acute upward angle. In a ligament release procedure (sometimes called ligamentolysis), the surgeon cuts through this ligament so the penis drops to a more downward-hanging position. The result is not new tissue or actual growth. It is simply more of the existing shaft becoming visible.
The surgeon accesses the ligament through a small incision just above the base of the penis. Once the ligament is divided, the key challenge is preventing it from reattaching during healing. If scar tissue reforms in the same spot, the gains disappear. To address this, many surgeons now place a buffer material between the cut ends. Options include a small silicone spacer or a flap of fatty tissue redirected from nearby. Research published in a review of elongation techniques found that adding a silicone buffer was the only specific technique that produced a statistically significant length increase, averaging about 0.7 cm beyond what ligament division alone achieved.
Overall, the average gain in stretched penile length from ligament release is roughly 1.3 cm (about half an inch), with a range from no gain at all to about 3 cm in the best cases. Some patients actually measured shorter afterward, likely due to scarring and retraction. These numbers reflect flaccid length. Gains in erect length are typically even smaller, because the ligament plays a role in erection angle and stability. Losing that anchor can cause the erect penis to point downward or feel less stable during sex.
How Girth Augmentation Works
Girth procedures add circumference by placing material between the penile skin and the underlying shaft. The most straightforward version involves injecting fat harvested from the patient’s own body (usually the abdomen or thighs) into the space beneath the penile skin. The appeal is that it uses your own tissue, but the downside is unpredictable absorption. The body reabsorbs a significant portion of transferred fat over time, often unevenly, which can leave lumps or an irregular shape that requires revision surgery.
A more structured approach uses acellular dermal matrix, a sheet-like material made from processed human or animal skin with all the cells removed, leaving behind a collagen scaffold. The surgeon wraps this sheet around the shaft beneath the skin, and over time your own cells grow into the scaffold, integrating it into the tissue. This produces a more uniform result than fat injection, though complications including contraction, hardening, and infection are possible.
Other injectable fillers, including hyaluronic acid (the same substance used in facial fillers), have been used off-label for girth. These are less invasive but temporary, typically lasting one to two years before the body breaks down the material.
Silicone Implants for Girth and Flaccid Length
The Penuma implant is a crescent-shaped silicone sleeve that fits over the shaft of the penis beneath the skin. It is FDA-cleared specifically for cosmetic deformities such as retractile penis, though it is also marketed for flaccid enhancement. The surgeon places the implant through an incision in the scrotal area or just above the pubic bone, sliding it over the top and sides of the shaft. The underside of the penis, where the urethra runs, is left uncovered.
The implant adds girth immediately and can give the flaccid penis a fuller appearance. It comes in different sizes (large, extra-large, and extra-extra-large) and lengths. Unlike fat grafting, the result does not shrink over time since the silicone maintains its shape permanently. However, as a foreign body, it carries risks of infection, erosion through the skin, discomfort, and the possibility of removal if complications arise.
Who Is Actually a Candidate
Most men who seek enlargement surgery have a penis that falls within the normal size range. European Association of Urology guidelines define a micropenis as a stretched length more than 2.5 standard deviations below the mean for age and ethnicity, which in practice means a stretched length under roughly 7 cm (2.75 inches) in an adult. Men who meet this threshold have the strongest medical justification for surgical intervention.
For men with normal measurements who feel their penis is inadequate, the guidelines recommend psychological evaluation before any surgical consultation. A significant number of these patients meet criteria for body dysmorphic disorder, a condition where perceived flaws in appearance cause serious distress disproportionate to reality. Screening tools exist specifically for penile dysmorphic disorder, and mental health evaluation is considered a standard part of the workup. Surgery in these patients often fails to resolve the underlying dissatisfaction, and complication risks remain the same regardless of the psychological motivation.
Risks and Complications
The complication profile is what makes most urological organizations cautious about recommending these procedures for men with normal anatomy. The Cleveland Clinic lists the major risks as scarring, infection, loss of penile sensation, erectile dysfunction, penile curvature or kinking from scar tissue, dissatisfaction with results, and the need for additional corrective surgery that can actually make the penis shorter than it was before the original procedure.
Scarring is particularly problematic because the penis has very little soft tissue padding. Scar tissue that forms irregularly can pull the shaft into a bend, create painful erections, or cause the skin to dimple and adhere to deeper structures. Loss of sensation can occur when nerves running along the top of the shaft are damaged during ligament release or implant placement. Erectile dysfunction, while not the most common outcome, is one of the most feared, and it can result from nerve damage or from disruption of blood flow during surgery.
Infection rates vary by technique but are a concern with any procedure involving implants or grafts. If an implant becomes infected, it typically needs to be removed entirely, leaving the patient worse off than before surgery.
Recovery Timeline
Recovery follows a staged progression. Walking is encouraged from the start, but you should avoid lifting anything over 15 pounds or doing vigorous exercise for at least four weeks. Sexual activity, including masturbation, is off-limits for a minimum of six weeks. Full healing, where you can return to all normal activities including cycling and intercourse, generally takes four to six weeks.
For patients who have had ligament release, the post-surgical period often includes a traction or stretching regimen. The goal is to prevent the cut ligament from scarring back into its original position, which would erase whatever length was gained. Protocols vary, but a common approach involves wearing a penile traction device or performing manual stretching exercises for 30 to 60 minutes daily over several months. Research on traction therapy suggests it can help preserve length, though in one study comparing groups who did and did not perform post-operative stretching, the difference in final length (1.6 cm versus 1.2 cm) was not statistically significant.
Swelling and bruising are expected for the first two to three weeks and can make the penis look significantly different from the final result. It takes several months for swelling to fully resolve and for the tissue to settle into its permanent shape, so judging the cosmetic outcome too early is misleading.