title: Primary closure of inadvertent durotomies utilizing the U-Clip in minimally invasive spinal surgery.
abstract: METHODS
  Retrospective clinical cohort study.
  
  
  OBJECTIVE
  To examine performance of the U-Clip for the closure of inadvertent durotomy occurring during minimally invasive spinal surgery.
  
  
  BACKGROUND
  Primary closure of inadvertent durotomies that occur during minimally invasive spinal surgery can be technically difficult to accomplish when using standard knot-tying and suture management techniques, owing to the narrow and deep surgical corridor afforded by tubular retraction systems. The U-Clip is a novel device that can achieve tight tissue approximation without the need for knot-tying and excessive suture manipulation, making it ideally suited for use in minimally invasive spinal surgeries.
  
  
  METHODS
  We performed a retrospective review of patients who underwent minimally invasive decompressive procedures complicated by durotomy and repaired using U-Clips for the period January 2008 to January 2010. A total of seven patients were identified.
  
  
  RESULTS
  Four of the seven patients were male. Six patients underwent lumbar laminectomy or discectomy. One patient underwent resection of a cervical synovial cyst. In each patient, the durotomy was repaired primarily using U-Clips. All six lumbar patients were discharged home on the same day, and the remaining patient was discharged the following morning. Mean follow-up was 6.3 months. No patient experienced symptoms related to persistent cerebrospinal fluid leakage.
  
  
  CONCLUSIONS
  Primary closure of an inadvertent durotomy occurring during minimally invasive spinal surgery can be effectively achieved using the self-closing U-Clip device.
authors.affiliation: Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
authors.forename: Debbie
authors.initials: D
authors.lastname: Song
authors.forename: Paul
authors.initials: P
authors.lastname: Park
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002574:Cervical Vertebrae / Q000601:surgery; D004388:Dura Mater / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008159:Lumbar Vertebrae / Q000601:surgery; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation* / Q000379:methods; D019637:Orthopedic Procedures / Q000295:instrumentation* / Q000379:methods; D012189:Retrospective Studies; D013131:Spine / Q000601:surgery*; D013525:Surgical Instruments; D016896:Treatment Outcome