A comprehensive narrative review of residual curvature correction during penile prosthesis implantation in patients with severe erectile dysfunction and concomitant Peyronie's disease.

Residual curvature correction during penile prosthesis implantation (PPI) is usually needed in patients with severe erectile dysfunction (ED) and concomitant Peyronie's disease (PD). The aim of the study was to assess the different existing techniques for treating residual penile curvature during PPI in patients with severe PD and ED. We generated a comprehensive narrative review of the literature until August 2020 on the use of PPI in combination with straightening reconstruction techniques, in treating patients with severe PD and ED. We included studies published in English, assessing the PPI as primary intervention in patients with PD and ED. Secondary research studies and studies with insufficient data were excluded from final analyses. We included a total of 33 clinical articles with 1,612 patients that assessed the effects of PPI combined with straightening surgical techniques for the treatment of severe PD and ED. Based on the severity of penile curvature, the concomitance of additional penile deformities (i.e., hourglass deformity), the penile length, the presence of previous penile operations and the surgeon's experience, four main categories of surgical techniques were identified: (I) PPI with plication of the penis on the convex side of the curvature, (II) transcorporeal plaque incision/excision, (III) PPI with plaque/tunical incision(s) on the concave side of the curvature and (IV) PPI with plaque incision/excision plus grafting. Patients with severe PD and ED can expect excellent outcomes with PPI and surgical correction of residual penile curvature and minimal side effects. Overall, all the above techniques seem to able to correct the residual penile curvature during prosthesis implantation. Grafting techniques seem to be favorable in patients with additional severe penile shortening. Still, no definite conclusions can be drawn regarding the superiority of one technique over the other.