An implantable support is provided to secure an implanted prosthesis in a natal male or a trans-male. The implantable support has a base portion attachable to a pelvis, an artificial ligament coupled to the base portion, and an artificial crus penis recess that is sized to receive a proximal end portion of a penile prosthesis. The artificial ligament orients the penile prosthesis within a neopenis anatomically in a position of a natal penis and in a position adapted for penetrative intercourse.