The Application of Auxiliary System for Percutaneous Pedicle Screws Osteosynthesis on the Treat-ment of Thoracolumbar Vertebra Fracture

Abstract：Objective To compare the clinical effect of minimally invasive percutaneous pedicle screws osteosynthesis (MIPPSO)with traditional open pedicle screws osteosynthesis( TOPSO)in the treatment of thoracolumber vertebra fracture. Methods 86 consecutive inpatients with severe thoracolumbar vertebra fractures from JAN 2008 to DEC 2012 were divded randomly into two groups,MIPPSO group and TOPSO group respectively. The image result,operative time,intraoperative blood loss,and clinical outcomes were compared between the two groups. Results All of the patients had been completely followedup for 6 to 48 month(s average 18. 6 months). There were no significant difference in the recovery rate of vertebral height and sagittal cobb angle between MIPPSO group and TOPSO group(P ﹥0. 05). The rate of vertebral height and sagittal cobb angle were both significantly differen(t P ﹤0. 05)before and after operation. There was no significant difference in operative time between the two groups(P ﹥0. 05). Intraoperative blood loss was significantly different between MIPPSO group(54. 4 ± 12. 6) mL and TOPSO group(289. 1 ±20. 5)mL(P ﹤0. 05). There were no surgery-related complications in the two groups,except a case of wound infection found in TOPSO group. Conclusion The self-made auxiliary system for minimally invasive percutaneous pedicle screws osteosynthesis is very useful,it not only can achieve the same clinical effect with open surgery,but aslo has the advantages of less trauma and bleeding.