Metoidioplasty

Metoidioplasty is a genital surgical procedure for trans men in which the clitoris — enlarged through long-term testosterone treatment — is released and shaped into a small neopenis. It is an alternative to phalloplasty.

What the procedure involves

Metoidioplasty is a surgical procedure for trans men in which the clitoris — which may become substantially enlarged through long-term testosterone use — is released and shaped into a neopenis. The procedure is less extensive than phalloplasty: no tissue is transferred from the arm or leg, the operation is shorter, and there is no prolonged donor-site morbidity.

Requirements

Metoidioplasty requires at least one to two years of testosterone therapy, because clitoral hypertrophy is necessary to provide sufficient tissue. The resulting neopenis is generally 3–6 cm long and remains sexually sensitive because the original nerves are preserved.

What the procedure does not provide

The neopenis is not large enough for penetrative intercourse. Urination through an extended urethra (urethral lengthening) is possible as part of an additional procedure, but it increases the risk of complications (fistulas and strictures). Erection is possible through testosterone-driven swelling, but without mechanical support it is not firm enough for penetration.

Complications

Wound infection, poor wound healing, urinary complications (especially with urethral lengthening — fistulas in 15–40% of cases, with strictures also occurring frequently), loss of sensation or hypersensitivity. Recovery is generally shorter than after phalloplasty, but the outcome depends more heavily on the individual clitoris’s response to testosterone.

Hysterectomy and oophorectomy

Metoidioplasty is often combined with or preceded by removal of the uterus and ovaries. This permanently ends menstruation and has hormonal consequences (lifelong dependence on external testosterone). The effects of removing the uterus and ovaries are described on transkompas.nl.

Comparison with phalloplasty

Phalloplasty produces a visually larger neopenis with more options for erectile implants, but comes at the cost of extensive donor-site scarring on the arm or leg, a longer operation, more intensive recovery and higher complication rates. Metoidioplasty is technically simpler and better preserves sexual sensation, but produces a visually smaller result.

Practical context in the Netherlands

In the Netherlands, metoidioplasty is offered at specialised centres, including Amsterdam UMC, with waiting times that can be lengthy. Coverage through basic health insurance requires a medical indication and prior treatment process; the exact scope of coverage may change in line with guidelines from insurers and the NZa.

Regret and reversibility

Unlike a mastectomy or vaginoplasty, metoidioplasty involves limited tissue alteration — the clitoris is repositioned rather than removed. Nevertheless, fully restoring the preoperative anatomy is complex. Detransition after metoidioplasty has been documented; the result is a neopenis-like structure that retains some functional and sexual capacity, but is no longer visually 'cis-passing'.

Technique

The procedure uses the patient’s own tissue and does not require donor skin from the arm or leg. The suspensory ligaments of the clitoris are cut so that it projects further forward and functions as a small neopenis. It is often combined with urethral lengthening (to enable urination while standing) and scrotal construction with testicular implants.

Benefits and limitations

Compared with phalloplasty, the benefits include a shorter surgical and recovery process, preservation of sexual sensation and no donor-site scars. The organ is usually small, which limits penetrative sex, while urethral lengthening increases the risk of complications such as strictures and fistulas.

Availability in the Netherlands

Metoidioplasty is performed in the Netherlands, among other places, at Amsterdam UMC. Treatment takes place after an extensive diagnostic process and referral through a gender clinic.