Phalloplasty constructs a penis using tissue borrowed from another part of your body, most often the forearm or thigh. It is one of the most complex procedures in reconstructive surgery, typically requiring multiple stages spread over 12 to 18 months. Each stage builds on the last: creating the shaft, connecting nerves for sensation, extending the urethra for standing urination, and eventually implanting a device for erectile function.
Where the Tissue Comes From
The new penis is built from a large flap of skin, fat, and blood vessels harvested from a “donor site” on your own body. The two most common sources are the inner forearm (radial forearm free flap) and the outer thigh (anterolateral thigh flap). A less common option uses tissue from the calf or abdomen.
The forearm flap is the most widely used because the skin there is thin and pliable, the blood supply is reliable, and the flap comes with well-defined nerves that can later be connected to restore sensation. The trade-off is a visible scar on the forearm. For some people, that scar invites unwanted questions, which makes donor site appearance a real consideration when choosing a technique. The thigh flap leaves a scar in a less visible location but tends to produce a bulkier result because thigh tissue is thicker.
Building the Shaft
Surgeons shape the harvested tissue into a cylinder using what’s called a “tube within tube” design. The outer layer of skin forms the visible shaft of the penis. A narrower inner tube, rolled from the same flap, becomes the new urethral channel that will eventually allow standing urination. Think of it like rolling a smaller tube inside a larger one, both crafted from the same piece of tissue.
Once shaped, the flap is transferred to the groin area. If a forearm flap is used, the tissue is completely detached from the arm and reconnected at the new site using microsurgery. Surgeons join the flap’s blood vessels to vessels in the groin under a microscope to restore circulation. This microsurgical reconnection is one of the most technically demanding parts of the operation.
Reconnecting Nerves for Sensation
Restoring feeling in the new penis requires connecting the nerves that came with the donor flap to nerves already present in the groin and genitalia. There are two types of sensation surgeons aim for: basic touch (so you can feel pressure, temperature, and contact) and erogenous sensation (sexual feeling).
For protective or tactile sensation, a sensory nerve from the flap is typically joined to a nerve in the groin. For erogenous sensation, a second nerve from the flap is connected to a branch of the dorsal clitoral nerve, preserving the capacity for sexual pleasure. The clitoris itself is usually buried at the base of the new penis so its nerve pathways remain intact.
Nerve regrowth is slow, often taking a year or more before sensation develops meaningfully. In published outcomes, about 86% of patients reported sensation in the new penis. The quality and extent of that sensation varies from person to person and continues to evolve for several years after surgery.
Extending the Urethra
Creating a continuous urinary channel from the bladder through the new penis is the most complication-prone part of the entire process. The new urethra has to bridge a significant gap, and surgeons use a combination of the inner tube from the flap and local tissue flaps raised from the labia and surrounding area to build this connection.
The urethral extension involves multiple connection points (anastomoses), each of which must heal without narrowing or leaking. Surgeons reinforce these junctions with several layers of tissue to reduce the risk of complications. A catheter stays in place for weeks while the new channel heals.
Urethral complications are the most common issue after phalloplasty. A large review of 665 patients found an average of roughly one urethral complication for every two surgeries. Fistulas (small leaks where urine escapes through an unintended opening) occur in 10% to 64% of cases depending on the study, while strictures (narrowing that blocks urine flow) occur in 14% to 57%. Even in the hands of the most experienced surgical teams, the overall urethral complication rate is around 24%. Most of these complications are correctable with additional minor procedures, but they do add to the overall recovery timeline.
Creating the Glans
A separate step called glansplasty sculpts the tip of the new penis to resemble the head (glans) of a natal penis. Surgeons create a visible ridge (the corona) by raising a small flap of skin near the tip and folding or shaping it, then covering the exposed area with a skin graft. Careful placement of sutures beneath the coronal flap produces a natural-looking contour. This step is sometimes performed during the initial surgery and sometimes as a later revision.
Implanting an Erectile Device
Because the new penis doesn’t have the spongy tissue that produces natural erections, achieving rigidity for penetrative sex requires an internal implant placed in a later stage. Surgeons typically wait until the penis has fully healed and developed protective sensation, so you can feel if something is wrong with the device.
The most common option is an inflatable implant. A three-piece version places inflatable cylinders inside the shaft, a small fluid reservoir behind the abdominal wall, and a pump in the scrotum (which may be created from labial tissue in a separate stage called scrotoplasty). Squeezing the pump transfers fluid into the cylinders, producing an erection. Releasing a valve lets the fluid flow back, returning the penis to a relaxed state. Two-piece versions combine the reservoir and pump into a single unit.
A simpler alternative is a semi-rigid rod, which keeps the penis firm enough for penetration at all times. You bend it upward for sex and downward for concealment under clothing. Semi-rigid devices require less manual dexterity to operate, which can matter if hand function at the donor site has been affected.
How the Stages Fit Together
Phalloplasty is rarely completed in a single operation. Most surgical teams break the process into two to four stages, with several months of healing between each one. A typical sequence might look like this:
- Stage one: Flap harvest, shaft creation, nerve hookups, and initial urethral work. This is the longest and most involved surgery.
- Stage two: Urethral lengthening and connection to the bladder, if not completed in the first stage. Glansplasty may also happen here.
- Stage three: Erectile implant placement and any revisions to improve appearance or function.
The full process from first surgery to final stage typically spans 12 to 18 months. Each stage requires its own recovery period, during which physical activity is restricted and the surgical sites are carefully monitored.
Recovery and Donor Site Healing
Recovery after the initial surgery is the most intensive. Hospital stays vary, but most people spend about a week as an inpatient. A catheter remains in place for several weeks while the urethral connections heal. Full return to normal activity takes several months.
The donor site on the forearm (when that technique is used) is covered with a skin graft taken from the thigh. In a review of 940 forearm flap reconstructions, the overall donor site complication rate was 7.9%. Skin graft failure was the most common issue, affecting about 4.5% of patients. Around 5% experienced some decrease in forearm strength or sensation, and about 4% had lingering swelling in the arm. These numbers improve with time, but some cosmetic and functional changes at the donor site are permanent.
Satisfaction and Functional Outcomes
Despite the complexity and complication rates, satisfaction after phalloplasty is consistently high in published studies. Up to 97% of patients who received a forearm-based phalloplasty reported being fully satisfied with the cosmetic appearance and size of the result. Satisfaction with the ability to urinate while standing and with sexual function tends to be somewhat lower, largely because urethral complications and the need for an implant add variability to those outcomes.
Sexual sensation develops gradually as nerves regrow into the transplanted tissue. The preserved clitoral nerve connection means most patients retain the capacity for orgasm, though the sensation may feel different than before surgery. Many people describe the new sensory experience as something their brain adapts to over time, with erogenous feeling continuing to improve for two to three years after the nerve hookup.