Comparative Study of Clinical Efficacy of Percutaneous Short Segment Pedicle Screw Fixation With or Without Screwing of the Fractured Vertebra With O-arm Navigation

Abstract

Objective: To retrospectively analyze the short-term and long-term efficacy of O-arm-navigated percutaneous short segment pedicle screw fixation with or without screwing of the fractured vertebra.Methods: 42 patients who underwent O-arm-navigated percutaneous short segment pedicle screw fixation for the treatment of thoracolumbar fractures from February 2015 to December 2018 were selected. The patients were divided into two groups according to fixation with or without screwing of the fractured vertebra, 21 cases each. The operation time, length of incision and intraoperative bleeding of the two groups of patients, as well as preoperative, one-week postoperatively and one-year postoperatively Cobb angle, percentage of anterior vertebral height, VAS and ODI data were analyzed to compare the short-term and long-term clinical outcomes of the two groups.Results: All the patients underwent surgery successfully. There were no neurological or other complications after the surgery. All patients were followed up for at least one year. There was no failure of fixation at the one-year follow-up. There was no significant difference in the operation time and intraoperative blood loss between the two groups (P>0.05). The length of incision was statistically significantly different between the two groups (P<0.05). There was no significant difference in Cobb angle and AVH% between the two groups before and one week after the surgery (P>0.05). The Cobb angle and AVH% was statistically significantly different one year after the surgery between the two groups (P<0.05).The Cobb angle and AVH% contrast was statistically significant before surgery, one week and one year after the surgery in the respective group (P<0.05). There was no statistically significant difference in the VAS and ODI preoperatively, one-week and one-year postoperatively between the two groups (P>0.05). There was statistically significant difference in the VAS and ODI throughout the follow-up period in the respective group(P<0.05). Conclusion: The short-term efficacy of the two groups is similar, but the long-term efficacy is better through screwing of the fractured vertebra.