title: Laparoscopic evaluation shows deficiencies in memory ring deployment during small ventral hernia repair.
abstract: BACKGROUND
  With the introduction of a self-expanding, memory-containing, circular hernia patch, surgeons have been enthusiastic about its use to repair ventral hernias smaller than 3 cm in diameter. The aim of this study was to evaluate the efficiency, reliability, and safety of the device laparoscopically with respect to adequate deployment of the patch.
  
  
  METHODS
  During 1 year all patients with small ventral hernias were treated with this memory-containing patch and were inspected by laparoscopy. Just prior to insertion of the patch, remaining adhesions on top of the peritoneum were analyzed, as was the interference of the umbilical ligament. The final position of the patch was monitored, identifying the cupping phenomenon, exposure of the polypropylene to the viscera, and the amount of tension on the straps. All patients were followed for 2 years and postoperative complications and recurrence rate were monitored.
  
  
  RESULTS
  Twenty-eight patients were operated on for repair of a small ventral hernia with laparoscopic control. Adhesions, not digitally palpable, that interfered with adequate patch deployment were observed in more than 80% of the cases. After a median follow-up of 25 months a 14.8% recurrence rate was observed.
  
  
  CONCLUSIONS
  The patch, consisting of both polypropylene and ePTFE, leads to unacceptable morbidity and a high rate of recurrences. By laparoscopic evaluation, these recurrences are probably based on a combination of material characteristics and unavoidable technical errors.
authors.affiliation: Department of General and Hepatobiliary Surgery and Liver Transplantation Service, Ghent University Hospital and Medical School, 2 K 12 IC De Pintelaan 185, 9000, Ghent, Belgium. frederik.berrevoet@Ugent.be
authors.forename: Frederik
authors.initials: F
authors.lastname: Berrevoet
authors.forename: Bert
authors.initials: B
authors.lastname: Van den Bossche
authors.forename: Luc
authors.initials: L
authors.lastname: de Baerdemaeker
authors.forename: Bernard
authors.initials: B
authors.lastname: de Hemptinne
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006554:Hernia, Umbilical / Q000601:surgery; D006555:Hernia, Ventral / Q000601:surgery*; D006801:Humans; D010535:Laparoscopy; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D019736:Prostheses and Implants; D011474:Prosthesis Design; D012008:Recurrence; D013526:Surgical Mesh; D013536:Suture Techniques; D000267:Tissue Adhesions; D014057:Tomography, X-Ray Computed