A team of doctors in South Africa completed the world’s first successful penis transplant in December. According to surgeons at Cape Town’s Tygerberg Hospital and at Stellenbosch University, the patient has since “regained all function in the newly transplanted organ.”

Surgeons at Tygerberg Hospital used techniques employed in the first face transplants to attach blood vessels and nerves in the penis of a 21-year-old man who had lost his penis in a coming-of-age ritual.

During the nine-hour procedure, surgeons first isolated the blood vessels and secured them with a clamp. They then stitched the blood vessels together using sutures and 5-8 stitches. Doctors completed a similar procedure with the nerves in the donor penis.

This particular surgical procedure was challenging because of how tiny blood vessels in the penis are. Compared to blood vessels in the human kidney, which have an average diameter of 10 millimetres, and arteries connecting to the lungs, which can have an average diameter of 3.5 millimetres, blood vessels in the penis are just 1.5 millimetres wide.

Three months after the procedure, the man now has a penis that can pass urine, ejaculate, and perform just as well as any other penis. Doctors say that this procedure can eventually be extended to men who have lost their penises from penile cancer, or to those suffering from severe erectile dysfunction.

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