Penis enlargement surgery is not a highly requested procedure. In some cases, this surgery is thought to cause permanent damage. However, there is insufficient research on experimentally performed penis enlargement surgery. The most common surgical method used to lengthen the penis involves cutting the ligaments that attach the penis to the pubic bone. When these ligaments are cut, the penis hangs lower, giving the appearance of increased length. However, cutting the ligaments can lead to instability of the erect penis.

Penis thickening using fat harvested from the body may not yield the desired results. Because some of the injected fat is reabsorbed by the body, this can lead to penile curvature, deformity, and asymmetry. Furthermore, there are opinions that these procedures can weaken erections and even impair the ability to achieve an erection.