title: A New Sliding-Loop Technique in Renorrhaphy for Partial Nephrectomy: A Feasibility Study in a Porcine Model.
abstract: BACKGROUND
  We developed a sliding-loop technique that narrowed both sides of the parenchyma in a porcine model and compared it with the conventional sliding-clip technique.
  
  
  METHODS
  Three pigs (30-40 kg) were reused following another experiment conducted by the same researchers. Bilateral kidneys were harvested within 30 minutes after euthanasia. Two partial nephrectomies per kidney were performed on opposite surfaces. All kidney defects were of the same size (diameter of 2.5-3 cm with a depth of 1.0-1.5 cm). The sliding-clip technique and sliding-loop technique were performed separately. In the sliding-loop technique, we created a 1-cm loop at the end of a Vicryl and placed a tetrafluoroethylene polymer pledget in front of the knots passing through the needle. The needle then crossed the loop after passing through the renal parenchyma. A Weck clip was placed and slid on one side to tighten the suture. Tightening was controlled with an equivalent force using a digital push-pull gauge. Three stitches were placed at each renorrhaphy site. The distance between repaired renal surfaces was measured at 5 different points (3 suture sites and 2 middle sites between sutures).
  
  
  RESULTS
  The results of the 2 techniques were compared by using the independent t test. The mean distance between renal surfaces was significantly narrower in the sliding-loop technique than in the conventional technique (1.80 ± 1.08 mm vs 5.28 ± 2.46 mm, P < .001).
  
  
  CONCLUSIONS
  In the porcine model, the sliding-loop technique more effectively closed the partial nephrectomy defects compared with the conventional sliding-clip technique.
authors.affiliation: Seoul National University Bundang Hospital, Seongnam, Korea.
authors.forename: Jung Keun
authors.initials: JK
authors.lastname: Lee
authors.affiliation: Seoul National University Bundang Hospital, Seongnam, Korea College of Medicine, Seoul National University, Seoul, Korea.
authors.forename: Jong Jin
authors.initials: JJ
authors.lastname: Oh
authors.affiliation: Seoul National University Bundang Hospital, Seongnam, Korea College of Medicine, Seoul National University, Seoul, Korea.
authors.forename: Sangchul
authors.initials: S
authors.lastname: Lee
authors.affiliation: College of Medicine, Seoul National University, Seoul, Korea SMG-SNU Boramae Medical Center, Seoul, Korea.
authors.forename: Seung Bae
authors.initials: SB
authors.lastname: Lee
authors.affiliation: Seoul National University Bundang Hospital, Seongnam, Korea College of Medicine, Seoul National University, Seoul, Korea.
authors.forename: Seok-Soo
authors.initials: SS
authors.lastname: Byun
authors.affiliation: Seoul National University Bundang Hospital, Seongnam, Korea College of Medicine, Seoul National University, Seoul, Korea.
authors.forename: Sang Eun
authors.initials: SE
authors.lastname: Lee
authors.affiliation: College of Medicine, Seoul National University, Seoul, Korea Seoul National University Hospital, Seoul, Korea drboss@korea.com.
authors.forename: Chang Wook
authors.initials: CW
authors.lastname: Jeong
mesh_terms: D058107:Abdominal Wound Closure Techniques; D000818:Animals; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D009392:Nephrectomy / Q000379:methods*; D013526:Surgical Mesh; D013552:Swine
keywords: partial nephrectomy; renorrhaphy; sliding-clip technique