Abstract：Objective To compare the midterm clinical Results between traditional open pedicle screw fixation and minimally invasive percutaneous in the treatment of thoracolumbar fracture.Methods From December 2010 to February 2014, 55 thoracolumbar fracture patients without neurological symptoms in Department of Spine Surgery of Henan People′s Armed Police Corps Hospital were enrolled in the research. Twenty-four patients were treated with minimally invasive percutaneous pedicle screw fixation and 31 patients were treated with the traditional open pedicle screw fixation. The peri-operative index, pre-and postoperative radiography, relief of the low back pain and general health status of each group were documented and compared, respectively.Results All patients had been followed up for 10 to 44 months, 29 months on the average. There were significant differences in the incision size, surgical blood loss, surgical draining loss, visual analogue scale of back pain, length of stay and complications (all P values＜0.05), however, no difference in the surgical time was found(P＞0.05). The vertebral kyphotic angle, Cobb angle, anterior height of the fracture vertebral body and sagittal index were all significantly different between pre-operation and post-operation in each group (all P values＜0.05). The sagittal index in the open group was significantly higher than that in the minimally invasive group, and the difference was statistically significant(P<0.05). However, the Cobb angle, vertebral kyphotic angle and the anterior height of the injured vertebral body showed no significant difference (all P values>0.05).Conclusions Minimally invasive percutaneous pedicle screw fixation through the pedicle of the fractured vertebra is a minimally-invasive and effective choice for the treatment of thoracolumbar fracture of patients without neurologic signs and symptoms, which can provide comparable result of the traditional open operation.
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