title: [Preliminary study of the technique of minimally invasive percutaneous pedicle screws osteosynthesis for treatment of thoraco-lumbar vertebra fracture].
abstract: OBJECTIVE
  To introduce the technique of minimally invasive percutaneous pedicle screws osteosynthesis (MIPPSO) and compare the preliminary clinical outcomes of the treatment of thoraco-lumbar vertebra fracture with traditional open pedicle screws osteosynthesis (TOPSO).
  
  
  METHODS
  Using the "C" arm fluoroscopic guidance, the pedicle screws were put through new-designed instrumentation and inserted percutaneously with fifty cases of thoraco-lumbar vertebra fracture. Semi-Laminectomy were made in the heavy-occupation side through the incision of 4 cm. Vertebroplasty were made through pedicle of disease vertebrae. perioperative parameter and the index of image were compared with the treatment of traditional open pedicle screws osteosynthesis in other fifty cases.
  
  
  RESULTS
  The consumed time of operation in the MIPPSO group and the TOPSO group made no significant difference (P >0.05), but the length of incision, injury of paraspinal muscles, bleeding of operation, drain of postoperation, pain of postoperation, spending time of hospitalization were all significantly different between the two group (P <0.05). Each group compared to itself between preoperation and postoperation, the vertebral height, the height of intervertebral disk, Cobb's angle and the occupation index of vertebral canal were all significantly different (P <0.05). however compared to each other, whether preoperation or postoperation, there were not significant different in the index of image (P >0.05).
  
  
  CONCLUSIONS
  The technique of minimally invasive percutaneous pedicle screws osteosynthesis (MIPPSO) has the advantages of simple manipulation, safety, small trauma, less bleeding, light pain, quickly recovery and short hospitalization time.
authors.affiliation: Department of Orthopedics, the Second Affiliated Hospital of Wenzhou Medical College, Wenzhou 325027, China.
authors.forename: Yong-long
authors.initials: YL
authors.lastname: Chi
authors.forename: Hua-zi
authors.initials: HZ
authors.lastname: Xu
authors.forename: Yan
authors.initials: Y
authors.lastname: Lin
authors.forename: Qi-shan
authors.initials: QS
authors.lastname: Huang
authors.forename: Fang-min
authors.initials: FM
authors.lastname: Mao
authors.forename: Wen-fei
authors.initials: WF
authors.lastname: Ni
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007796:Laminectomy / Q000379:methods; D008159:Lumbar Vertebrae / Q000293:injuries* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D012189:Retrospective Studies; D016103:Spinal Fractures / Q000601:surgery*; D013123:Spinal Fusion / Q000295:instrumentation / Q000379:methods*; D013904:Thoracic Vertebrae / Q000293:injuries* / Q000601:surgery; D016896:Treatment Outcome