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  • At the Fracture Level versus Cross the Fracture Level Short-segment Pedicle Screw Fixation for Thoracolumbar Fractures: A Meta-analysis

    ObjectiveTo systematically review the efficacy of at the fracture level (AFL) versus cross the fracture level (CFL) short-segment pedicle screw fixation for thoracolumbar fractures. MethodsWe electronically search PubMed, The Cochrane Library (Issue 8, 2015), EMbase, CBM, CNKI, VIP and WanFang data to collect randomized controlled trials (RCTs) of AFL versus CFL short segment pedicle screw fixation for thoracolumbar fractures from inception to Aug. 2015. Two reviewers independently screened literature, extracted data and assessed the risk of bias of included studies. Meta-analysis was performed using RevMan 5.3 software. ResultsA total of 11 RCTs involving 730 patients were included. The results of meta-analysis indicated that: compared with the CFL group, the AFL group had more blood loss (MD=9.8, 95%CI 7.40 to 12.20), less implant failure rate (RR=0.19, 95%CI 0.07 to 0.48), lower long term postoperative VAS score of thoracolumbar pain (MD=-1.20, 95%CI -1.85 to -0.56), higher correction in short term postoperative kyphotic Cobb angle (MD=3.56, 95%CI 2.25 to 4.87), smaller value in long term postoperative kyphotic Cobb angle and its loss of correction (MD=-3.95, 95%CI -7.78 to -0.12; MD=-4.65, 95%CI -6.91 to -2.40), smaller degree of anterior vertebral height compression in short and long term postoperative (MD=-3.51, 95%CI -5.23 to -1.80; MD=-8.28, 95%CI -12.22 to -4.33), better result in long term postoperative anterior vertebral height and its loss of correction (MD=8.00, 95%CI 3.85 to 12.15; MD=-6.06, 95%CI -7.68 to -4.44). There were no significant differences between two groups regarding operation time, infectious complications and short term postoperative kyphotic Cobb angle (MD=0.11, 95%CI -5.36 to 5.57; RR=0.55, 95%CI 0.11 to 2.85; MD=-0.66, 95%CI -2.19 to 0.87). ConclusionCurrent evidence shows that AFL short-segment pedicle screw fixation for thoracolumbar fractures is superior to CFL fixation. Due to limited quality and quantity of the included studies, more high quality studies are needed to verify the above conclusion.

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