Phalloplasty is a surgical procedure that constructs a penis, typically using tissue transferred from elsewhere on the patient’s body. It serves people who need penile reconstruction for a range of reasons: gender-affirming surgery for transgender men and transmasculine individuals, reconstruction after traumatic injury or cancer, and correction of congenital differences. The procedure has evolved from complication-heavy multistage operations into microsurgical and perforator-based techniques that can deliver a functional organ with protective sensation, the ability to urinate standing, and, with additional implant surgery, enough rigidity for penetrative sex. It remains one of the most complex reconstructive surgeries performed today, often spanning multiple operations over a year or more.
Where the Tissue Comes From
The central challenge of phalloplasty is sourcing enough living tissue to build a structure that looks, feels, and works like a penis. Surgeons harvest a large flap of skin, fat, and sometimes muscle from a donor site on the patient’s own body, then shape it into a phallus and connect its blood vessels and nerves to the groin. Early techniques relied on tube-shaped pedicle flaps that stayed tethered to their blood supply, requiring multiple stages and carrying high complication rates. The introduction of microsurgery transformed the field, allowing free tissue transfer with direct reconnection of arteries, veins, and nerves at the recipient site.
The radial forearm free flap has been the most widely used technique for decades. A large section of skin and underlying tissue is taken from the inner forearm, shaped into a tube-within-a-tube (the inner tube forming a new urethra, the outer tube forming the shaft), and microsurgically connected to blood vessels and nerves in the groin. One of its advantages is that forearm skin is thin and pliable enough to roll into these concentric tubes without excessive bulk. In experienced centers, patients develop both protective (tactile) and erogenous sensation within about a year of surgery.1PubMed Central. Penile Reconstruction with Radial Forearm Free Flap—Present State of the Art Different design variations exist for how the flap is oriented and shaped; a study comparing two common radial forearm designs (the Chang-Hwang technique and the Gottlieb-Levine technique) found both viable, with differences in urethral placement and cosmetic outcome rather than overall success.2PubMed. Radial Forearm Free Flap Phalloplasty in Female-to-Male Transsexuals – A Comparison Between Gottlieb and Levine’s and Chang and Hwang’s Technique
The anterolateral thigh (ALT) flap has gained popularity as an alternative, especially in settings where microsurgical expertise is limited, because it can be used as a pedicled flap (staying attached to its blood supply rather than requiring vessel reconnection under a microscope). The thigh also offers a donor scar that is easier to conceal under clothing. Early reports described a phallus with good shape and consistency, and the flap can be made sensate by including a cutaneous nerve.3PubMed. A new phalloplasty technique: the free anterolateral thigh flap phalloplasty A systematic review of phalloplasty techniques over the past 25 years confirmed this shift, noting a move from traditional free-flap approaches toward more diverse reconstructive options including pedicled and perforator-based flaps.4PubMed Central. The Evolution of Phalloplasty for Masculinizing Gender Affirming Surgery: A Systematic Review of Surgical Techniques and Complications Over the Past 25 Years
A third option is the musculocutaneous latissimus dorsi flap, harvested from the back. It provides reliable anatomy with good size, volume, and a long neurovascular pedicle. While less commonly performed than the radial forearm approach, it is considered an acceptable choice, particularly when the forearm or thigh are not available or when the patient prefers to avoid a visible forearm scar.5PubMed Central. Musculocutaneous Latissimus Dorsi Phalloplasty The choice among these flaps depends on the patient’s body habitus, scarring preferences, whether they want urethral lengthening, and the surgical team’s experience.
How Surgeons Restore Sensation
One of the most important goals of phalloplasty is creating a neophallus that can feel touch and transmit sexual pleasure. This is achieved through nerve coaptation: surgeons connect a sensory nerve within the harvested flap to one of the dorsal nerves of the clitoris. In a radial forearm flap, the lateral antebrachial cutaneous nerve is typically used; in an ALT flap, the lateral femoral cutaneous nerve serves the same role.6PubMed Central. How Sensitive Is the Neophallus? Postphalloplasty Experienced and Objective Sensitivity in Transmasculine Persons These nerves are dissected as far back toward their origin as possible so they can reach the recipient nerve without tension, which improves the chances of successful regrowth.
The clitoris itself plays a critical role. During phalloplasty, the clitoris is preserved and repositioned to the base of the neophallus during a later surgical stage. Despite being de-epithelialized (its surface skin removed) and moved, the clitoris retains its nerve supply and function as long as both dorsal clitoral nerves are carefully protected during dissection. Preservation of the clitoris and its innervation is considered mandatory across surgical teams because incorrect handling can compromise both erogenous sensation and the ability to reach orgasm.7PubMed Central. Total phallic construction techniques in transgender men: an updated narrative review So the final result provides two pathways for sexual sensation: the regrown nerve connection through the neophallus itself, and the buried clitoris at its base, which can be stimulated through contact with the shaft.
Sensation does not return overnight. Nerve regrowth proceeds slowly, and most patients begin noticing tactile sensation months after surgery, with erogenous sensation following later. In one series, the medial and lateral antebrachial nerves from the forearm flap were connected to the inguinal nerve and to one of the dorsal clitoral nerves respectively, providing dual nerve pathways for recovery.8PubMed. Genital sensitivity after sex reassignment surgery in transsexual patients The timeline and degree of sensation vary between patients, but the fact that most do regain meaningful feeling is one of the procedure’s most significant achievements.
Building a Urethra and Why It Is the Hardest Part
Many patients undergoing phalloplasty want the ability to urinate standing through the tip of the neophallus. This requires urethral lengthening: constructing a new urinary channel that connects the native urethra to the tip of the reconstructed penis. It is, by a wide margin, the most complication-prone aspect of the entire surgery. The most common problems are fistulas (holes where urine leaks through the wall of the new urethra to the skin surface) and strictures (narrowing or scarring that blocks urine flow).9PubMed Central. Urethral stricture after phalloplasty
Reported fistula rates range from about 17% to 40%, and these tend to occur at suture lines, especially where the new urethra meets the native one. A reassuring detail is that up to two-thirds of fistulas close on their own without additional surgery. For larger or persistent fistulas, surgical repair using well-vascularized local tissue flaps improves outcomes. Strictures are even more variable in their reported incidence, ranging from 25% to as high as 86% depending on the study and how aggressively they are screened for.10International Journal of Reconstructive Urology. Urethral complications following radial forearm free flap phalloplasty: A comprehensive review of incidence, management, and preventive strategies Short strictures can sometimes be managed with minimally invasive endoscopic procedures, while longer or recurrent ones may need grafts made from tissue harvested from the inside of the cheek (buccal mucosa).
In one center’s experience with 25 patients who developed urethral complications, 88% had fistulas and 48% had strictures, with considerable overlap between the two problems. After one-stage repair using techniques including buccal grafts and modified flaps, follow-up imaging still showed strictures in about 15% of cases, illustrating how persistent these issues can be.11PubMed Central. Patient-reported outcomes after one-stage neourethral reconstruction in transmen with phalloplasty-associated strictures and fistulas Among patients who do undergo urethral lengthening and reach the final stage of recovery, about 75% are able to void while standing, while the remaining quarter end up with a permanent opening (urethrostomy) lower on the shaft.12PubMed Central. Comparison of surgical outcomes and urinary functioning after phalloplasty with versus without urethral lengthening in transgender men
Because of these risks, urethral lengthening is not required. Some patients opt for phalloplasty without it, choosing to continue voiding from a seated position. That decision significantly reduces the number of revision surgeries needed and shortens recovery.
Achieving Rigidity for Sex
A neophallus built from skin and fat cannot become erect on its own. For patients who want penetrative sexual function, an erectile device must be surgically implanted in a separate procedure, usually at least a year after the initial phalloplasty so the tissue has time to heal and regain sensation. The most common devices are inflatable penile prostheses, which use saline-filled cylinders placed inside the shaft, a pump in the neoscrotum, and a reservoir implanted in the pelvis. When squeezed, the pump transfers fluid into the cylinders, producing rigidity; a release valve reverses the process.
Several device designs are available, including two-piece and three-piece inflatable systems, as well as malleable (semi-rigid) rods. Newer designs include purpose-built prostheses for neophallus use, with features like optimized tubing length, narrow-base cylinders, a one-touch deflation mechanism, and cylinder tips shaped to better mimic natural anatomy.13Sexual Medicine Reviews. New Advancements in Inflatable Penile Prosthesis A device designed specifically for transmasculine patients (the Zephyr FTM implant) has also been studied alongside more conventional models.14PubMed Central. Insertion of inflatable penile prosthesis in the neophallus of assigned female at birth individuals: a systematic review of surgical techniques, complications and outcomes
Patient satisfaction with these devices is high: in the largest published series (247 patients, 328 implants), about 88% reported satisfaction, and 77% used the device for intercourse. But the complication picture is sobering. The five-year device survival rate was 78%, meaning roughly one in five devices failed within that window. Infection occurred in about 8.5% of cases, and the overall revision rate was 43%, reflecting the reality that most patients will need at least one additional implant-related surgery over their lifetime.15PubMed. Outcomes of inflatable penile prosthesis insertion in 247 patients completing female to male gender reassignment surgery
The neophallus lacks the natural erectile tissue (corpora cavernosa) that protects implant cylinders in a natal penis, making erosion and extrusion more likely. Rates of device erosion or extrusion range from 2% to 33% across published series, with malleable prostheses carrying higher risk than inflatable ones. Warning signs include persistent skin discoloration over the cylinder tips. If an implant erodes completely, it must be removed, and the patient typically waits at least six months before a new one can be placed. Reimplantation after erosion is more difficult due to scarring and tissue contraction.16PubMed Central. Penile and testicular prosthesis following gender-affirming phalloplasty and scrotoplasty: a narrative review and technical insights Device migration, where the implant shifts from its intended position, occurs in roughly 3% to 10% of cases and often requires revision to restore function.
Single-Stage Versus Multi-Stage Approaches
Phalloplasty can be performed as a single long operation or broken into two or more stages spread over months. The staging decision affects the total number of anesthesia exposures, the length of each individual recovery period, and certain complication rates. Somewhat counterintuitively, a systematic review found that partial or total flap loss was more common after two-stage procedures (about 5.9%) than after single-stage ones (about 1.3%). Fistula rates were also higher in the two-stage group (roughly 21% versus 16%).17PubMed Central. Single versus two-stage phalloplasty for transgender female-to-male patients: a systematic review of the literature These numbers likely reflect the additional tissue handling and disruption required when a partially healed reconstruction is reopened for a second operation.
That said, many surgeons still prefer staging because it allows each component of the reconstruction to heal before the next is added, and it lets the team assess flap viability and vascularity before committing to urethral hookup. In practice, even a “single-stage” phalloplasty often refers only to the initial reconstruction; glansplasty, scrotoplasty, implant placement, and revision procedures typically follow as separate surgeries. The total surgical journey from first operation to final result commonly spans one to two years, sometimes longer if complications intervene.
What Happens to the Donor Site
Harvesting a large tissue flap inevitably leaves a wound at the donor site, and for the radial forearm flap in particular, the resulting scar on the inner forearm is visible and sometimes a source of concern. The wound is usually covered with a split-thickness skin graft taken from the thigh, and it heals as a flat, slightly discolored patch. A study of 20 patients who underwent extended radial forearm flap phalloplasty found minimal to no functional impairment on standardized assessments of arm and hand use. Scar evaluations showed overall patient satisfaction, with pigmentation and texture being the most commonly noted cosmetic concerns rather than functional limitations.18PubMed Central. Functionality and Scar Evaluation of the Donor Site in Extended Radial Forearm Flap Phalloplasty: How Affected Is the Arm in Day-to-Day Life?
Researchers have explored whether dermal substitutes (bioengineered skin scaffolds) can improve donor site healing compared to traditional skin grafts. A comparative study found no significant differences in arm function or patient-reported scar scores between patients who received a biodegradable temporizing matrix, a collagen-based scaffold (Integra), or a conventional split-thickness graft. A trend toward lower tissue volume loss with the biodegradable matrix was observed but did not reach statistical significance.19PubMed Central. Analysis of the Radial Forearm Phalloplasty Donor Site: Do Dermal Matrices Improve Donor Site Morbidity? For patients who find the forearm scar unacceptable, choosing an ALT or latissimus dorsi flap moves the scar to the thigh or back, where clothing covers it more easily.
Cosmetic Refinements
A neophallus straight out of its initial construction looks like a tube of skin, not a penis. Additional procedures refine its appearance. Glansplasty, or glans reconstruction, sculpts the tip of the shaft to resemble a natural penile head with a defined coronal ridge. One technique raises a distally based skin flap at an oblique angle and uses a skin graft to create distinct coronal anatomy, with mattress sutures pulling the tissue into a shape that simulates a natural glans.20PubMed Central. The Comparison of A New Durable Coronaplasty Technique with Norfolk Method for Glans Reconstruction after Phalloplasty Medical tattooing is also sometimes used to add color differentiation between the shaft and glans, and to simulate other visual details.
Scrotoplasty, the construction of a scrotum, is typically performed as a separate stage. The labia majora are used to form scrotal pouches, and testicular implants (silicone prostheses) can be placed to provide a natural contour. These refinement procedures may seem minor compared to the initial reconstruction, but they contribute substantially to how natural the result looks and how satisfied patients feel with their bodies.
Patient Satisfaction and Quality of Life
Despite the high complication burden and the often lengthy surgical journey, satisfaction rates among phalloplasty patients are consistently strong across published studies. In a retrospective survey, 88% of patients reported being very satisfied with the aesthetic outcome, 72% were very satisfied with sexual function, and 81% described a strong improvement in quality of life. Perhaps most tellingly, 91% said they would undergo the same treatment again, and 84% would recommend it to others. All surveyed patients were living full-time as men.21Annals of Plastic Surgery. Quality of Life and Satisfaction in Transgender Men After Phalloplasty in a Retrospective Study These numbers hold up even when complications requiring revision are factored in, suggesting that the psychological and social benefits of the surgery weigh heavily in patients’ overall assessments.
Pelvic Floor Concerns After Surgery
An underappreciated aspect of phalloplasty recovery involves the pelvic floor. Pelvic floor dysfunction affects a striking proportion of transgender men after surgery: one review reported rates as high as 94%, encompassing urinary symptoms and changes in sexual function. Pelvic floor physical therapy, both before and after surgery, can reduce these dysfunction rates significantly.22PubMed. Postoperative Urogynecologic Complications After Gender-Affirming Surgery: A Narrative Review This is an area that many patients and even some surgical teams overlook in preoperative planning, and it underscores that phalloplasty recovery extends well beyond wound healing. Strengthening and coordinating the muscles that control urination and support the pelvic organs before surgery can make the postoperative period smoother, particularly for patients who undergo urethral lengthening and vaginectomy.
Preoperative Imaging and Planning
Modern phalloplasty benefits from detailed imaging before the patient ever enters the operating room. Techniques like CT angiography, Doppler ultrasound, and MR angiography allow surgeons to map the blood vessels that will supply the harvested flap. Identifying the largest and most reliable perforating artery in advance reduces intraoperative stress, shortens the procedure, and lowers the risk of partial flap loss and fat necrosis. For patients whose anatomy might not support a particular flap design, imaging can redirect the surgical plan before an incision is made, rather than forcing the surgeon to adapt mid-operation.
Tissue Engineering and the Future
The most ambitious frontier in penile reconstruction is growing functional tissue in a laboratory. Researchers have demonstrated that penile corporal tissue (the spongy erectile columns that fill with blood during an erection) can be bioengineered using collagen scaffolds seeded with the patient’s own cells. In an animal study, the entire pendular corporal bodies of rabbits were replaced with these engineered constructs; the bioengineered tissue developed structural and functional properties similar to native tissue, and the male rabbits were able to mate and impregnate females.23PubMed Central. Bioengineered corporal tissue for structural and functional restoration of the penis The self-assembly technique, which encourages cells to produce their own extracellular scaffolding rather than relying on an artificial one, is considered especially promising for creating tissue that more closely mimics the complex layered structure of the penis.24PubMed Central. Tissue Engineering for Penile Reconstruction
If this technology eventually translates to humans, it could solve one of the fundamental limitations of current phalloplasty: the inability to achieve erection without an implanted device. A bioengineered corporal body that fills with blood and stiffens naturally would eliminate the erosion, infection, and revision cycles that plague mechanical prostheses. That prospect remains years away from clinical application, but the proof of concept in animal models is genuine and actively being developed.