title: A multicenter prospective trial evaluating fetal bovine dermal graft (Xenform® Matrix) for pelvic reconstructive surgery.
abstract: BACKGROUND
  A prospective multicenter clinical study was performed to evaluate the safety and efficacy of a bovine dermal graft (Xenform® Matrix, Boston Scientific, Natick, MA, USA) during vaginal reconstructive surgery.
  
  
  METHODS
  Forty-five women with ICS stage 2 or higher pelvic organ prolapse (POP) were enrolled at 4 centers. POP-Q, pelvic floor function (PFDI-20), sexual function (PISQ-12), and patient satisfaction tools were used to assess subjects at baseline, and at 2 and 6 weeks, and 3, 6 and 12 months post surgery. The significance of symptom score changes at 6 months and 1 year were determined by the t-test for paired data. Forty-three of the 45 patients completed the 12 month study.
  
  
  RESULTS
  The majority of the subjects had cystocele (98%) and/or rectocele (84%) defects at study entry. At 12 months, 74% of the defects had improved to a stage 0 or 1. Mean PFDI-20 scores improved by 72% (p < 0.001) at 12 months, and PISQ-12 scores were maintained during the follow-up period indicating no decline in sexual function. Three subjects experienced one serious adverse event each; one of the adverse events (constipation) was deemed by the study physician to be unrelated to Xenform®. One subject had severe pyelonephritis resulting in dialysis. This subject had a previous history of pyelonephritis, sepsis and acute renal failure. The third subject had a reported recurrent cystocele of moderate severity, possibly related to the device. No graft related erosions or pain lasting more than 30 days were reported. No subjects withdrew due to an adverse event.
  
  
  CONCLUSIONS
  This study is the first to investigate the use of Xenform® Matrix in vaginal reconstructive surgery among patients with POP. Significant improvement was maintained at 12 months utilizing both objective and subjective assessment tools, confirming the safety and efficacy of this material in vaginal surgery.
  
  
  BACKGROUND
  ClinicalTrials.gov NCT01244165.
authors.affiliation: Cooper University Hospital, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Camden, New Jersey, USA. hgoldstein@christianacare.org
authors.forename: Howard B
authors.initials: HB
authors.lastname: Goldstein
authors.forename: Joseph
authors.initials: J
authors.lastname: Maccarone
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Naughton
authors.forename: Oscar A
authors.initials: OA
authors.lastname: Aguirre
authors.forename: Rakesh C
authors.initials: RC
authors.lastname: Patel
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D006801:Humans; D008875:Middle Aged; D056887:Pelvic Organ Prolapse / Q000175:diagnosis* / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000295:instrumentation* / Q000379:methods; D016038:Skin Transplantation / Q000295:instrumentation* / Q000379:methods; D016896:Treatment Outcome