title: A geometric model of plaque incision and graft for Peyronie's disease with geometric analyses of different techniques.
abstract: BACKGROUND
  A surgical approach with plaque incision and graft (PIG) to correct Peyronie's disease is the best method for complex, large deviations. However, the geometric and mechanical consequences of this intervention are poorly understood.
  
  
  OBJECTIVE
  The aim of this study was to analyze the geometric and mechanical consequences of PIG on penile straighten surgery.
  
  
  METHODS
  A tridimensional penile simile model with a curvature of 85° was created to test all of the most common PIG techniques. PIG with double-Y, H-shape, and Egydio techniques were used to rectify the curved penile model.
  
  
  METHODS
  The results that differed from a rectified cylinder shape were highlighted.
  
  
  RESULTS
  All of the analyzed techniques created a geometric distortion that could be linked to poor surgical results. We suggest a new technique to resolve these abnormalities.
  
  
  CONCLUSIONS
  Current techniques designed to correct penile deviation using PIG present geometric and mechanical imperfections with potential consequences to the postoperative success rate. The new technique proposed in this report could be a possible solution to solve the geometric distortion caused by PIG.
authors.affiliation: Ministry of Health, Ipanema Federal Hospital, Rio de Janeiro, Brazil; Urogenital Research Unit, State University of Rio de Janeiro, UERJ, Rio de Janeiro, Brazil.
authors.forename: Alexandre F
authors.initials: AF
authors.lastname: Miranda
authors.forename: Francisco J B
authors.initials: FJ
authors.lastname: Sampaio
mesh_terms: D006801:Humans; D008297:Male; D008953:Models, Anatomic; D010411:Penile Induration / Q000473:pathology / Q000601:surgery*; D010413:Penis / Q000033:anatomy & histology / Q000601:surgery*; D013524:Surgical Flaps
keywords: Corporoplasty; Erectile Dysfunction; Geometric; Graft; Peyronie's Disease; Plaque Incision and Grafting Surgery for Penile Curvature