title: Abdominal wall hernia repair: a comparison of Permacol and Surgisis grafts in a rat hernia model.
abstract: BACKGROUND
  This study compared two porcine-derived grafts Permacol (Tissue Science Laboratory, Covington, GA, USA) and Surgisis (Cook Surgical, Bloomington, IN, USA) in terms of strength of incorporation (SOI), incorporation of host tissue, and adhesion formation using a rat model.
  
  
  METHODS
  A prospective randomized study using 48 Sprague-Dawley rats. A standardized 1.5 x 5 cm fascial defect was created and repaired with either Permacol or Surgisis grafts. The rats were then sacrificed at 3, 14, 28, or 60 days. The specimens were examined for SOI, neovascularization, collagen deposition, collagen organization, and adhesion formation.
  
  
  RESULTS
  Surgisis had significantly greater SOI than Permacol at 28 (0.115 vs. 0.0754 Mpa) and 60 days (0.131 vs. 0.635 Mpa). Surgisis had significantly more collagen deposition and neovascularization than Permacol at 60 days. The area of adhesions was not significantly different between Surgisis and Permacol.
  
  
  CONCLUSIONS
  Surgisis is superior to Permacol in terms of SOI and tissue ingrowth at 60 days. Furthermore, Surgisis strengthened over time whereas Permacol decreased in strength.
authors.affiliation: General Surgery Service, Eisenhower Army Medical Center, Fort Gordon, GA 30905, USA.
authors.forename: F S
authors.initials: FS
authors.lastname: Ayubi
authors.forename: P J
authors.initials: PJ
authors.lastname: Armstrong
authors.forename: M S
authors.initials: MS
authors.lastname: Mattia
authors.forename: D M
authors.initials: DM
authors.lastname: Parker
mesh_terms: D000818:Animals; D001672:Biocompatible Materials; D003094:Collagen; D004195:Disease Models, Animal; D005500:Follow-Up Studies; D046449:Hernia, Abdominal / Q000601:surgery*; D008297:Male; D011446:Prospective Studies; D011474:Prosthesis Design; D019919:Prosthesis Implantation / Q000295:instrumentation*; D051381:Rats; D017207:Rats, Sprague-Dawley; D019651:Plastic Surgery Procedures / Q000379:methods*; D013526:Surgical Mesh; D013718:Tensile Strength; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; C422414:Permacol; D003094:Collagen