title: Accuracy and postoperative assessment of pedicle screw placement during scoliosis surgery with computer-assisted navigation: a meta-analysis.
abstract: BACKGROUND
  Accurate insertion of pedicle screws in scoliosis patients is a challenge for surgeons. Computer-assisted navigation techniques might help improve the accuracy of screw placement, thereby avoiding complications. Thus, the objective of this present work is to compare the accuracy and postoperative assessment of pedicle screw placement in scoliosis patients using a computer-assisted navigation technique and using a conventional free-hand method.
  
  
  METHODS
  A search of the PubMed, Cochrane, and Web of Science databases was executed. In vivo comparative studies that assessed the accuracy and postoperative evaluation of pedicle screw placement in scoliosis patients with or without navigation techniques were chosen and analyzed.
  
  
  RESULTS
  The accuracy of pedicle screw insertion was significantly increased when using the navigation system, although the average operative time and correction rate was not significantly different from that with non-navigated surgery.
  
  
  CONCLUSIONS
  The navigation technique improves the accuracy of pedicle screw placement during scoliosis surgery without prolonging the operative time or decreasing the deformity correction effect. Copyright © 2016 John Wiley & Sons, Ltd.
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Tian
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Zeng
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: An
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Yajun
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Beijing Jishuitan Hospital, Beijing, China.
authors.forename: Jianing
authors.initials: J
authors.lastname: Li
mesh_terms: D006801:Humans; D016343:Monitoring, Intraoperative / Q000379:methods; D061214:Patient Safety; D065289:Pedicle Screws; D011184:Postoperative Period; D015203:Reproducibility of Results; D012600:Scoliosis / Q000601:surgery*; D012984:Software; D013123:Spinal Fusion / Q000295:instrumentation* / Q000379:methods; D025321:Surgery, Computer-Assisted; D013904:Thoracic Vertebrae / Q000601:surgery; D014057:Tomography, X-Ray Computed
keywords: meta-analysis; navigation; pedicle screw; scoliosis