In phalloplasty, obtaining sufficient rigidity to allow for sexual penetration is difficult. Results of the combination in one phallus of a neo-urethra and a stiffener have been even more disappointing.(22) The basic limiting factor is that there is no good substitute for the unique erectile tissue of the penis to be used in the (re)construction.(20,23,24) For Sadove et al.,(5) the canine os penis has been the inspiration to use the osteocutaneous fibula flap, and they regard its intrinsic rigidity as one of the advantages of this flap. Even so, resorption, curving and fracture of autologous bone transplants have been reported, and the constantly rigid phallus may serve as a source of embarrassment to the patient.(22)