title: [Percutaneous pedicle screw fixation in thoracic-lumbar fracture using mini-invasive pedicle screw system guided by navigation].
abstract: OBJECTIVE
  To assess the therapeutic effects of thoracic-lumbar fracture fixation with percutaneous mini-invasive pedicle screw system guided by computer navigation.
  
  
  METHODS
  Fifty-one thoracic-lumbar fracture patients were divided into two groups: Sextant group (n = 21) undergoing percutaneous screw fixation with a minimally invasive pedicle screw system, and conventional pedicle screw fixation group (n = 30). The differences in the incision size, average blood loss during operation, surgical time, time of resuming walking after operation, numerical analogous pain score, etc. were analyzed.
  
  
  RESULTS
  The incision length of the sextant group was 2.4 +/- 0.41 cm, significantly shorter than that of the conventional pedicle screw fixation group (17.4 +/- 3.4 cm, P < 0.001). The average blood loss during operation of the sextant group was 114 +/- 67.4 ml, significantly less than that of the conventional pedicle screw fixation group (317 +/- 113.2 ml, P < 0.001). The surgical time of the sextant group was 2.1 +/- 0.4 hr, significantly shorter than that of the conventional pedicle screw fixation group (2.7 +/- 0.7, P < 0.05). The time of resuming walking after operation of the sextant group was 2.0 +/- 0.7 d, significantly shorter than that of the conventional pedicle screw fixation group (7.2 +/- 2.5 d, P < 0.001). The postoperative NAPS was significantly lower than that before operation in both groups, however, there was no significant difference in the improvement of NAPS between the two groups.
  
  
  CONCLUSIONS
  Percutaneous pedicle screw fixation using mini-invasive pedicle screw system guided by computer navigation is a good surgical therapeutic choice in thoracic-lumbar fracture.
authors.affiliation: Department of Spine Surgery, Beijing Jishuitan Hospital, Beijing 100035, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Tian
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Lin
authors.initials: L
authors.lastname: Hu
authors.forename: Zhi-yu
authors.initials: ZY
authors.lastname: Li
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yuan
mesh_terms: D000328:Adult; D001863:Bone Screws; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008159:Lumbar Vertebrae / Q000293:injuries; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D016103:Spinal Fractures / Q000601:surgery*; D025321:Surgery, Computer-Assisted; D013904:Thoracic Vertebrae / Q000293:injuries; D016896:Treatment Outcome