COMPARATIVE STUDY
JOURNAL ARTICLE
META-ANALYSIS
REVIEW
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Comparison of high- and low-viscosity cement in the treatment of vertebral compression fractures: A systematic review and meta-analysis.

BACKGROUND: High-viscosity cement (HVC) has been gradually applied in percutaneous vertebroplasty (PVP) and percutaneous kyphoplasty (PKP). Although HVC has been reported to reduce cement leakage, different opinions exist. To assess the complications of HVC in cement leakage in the treatment of vertebral compression fractures and to evaluate the clinical effect of HVC compared with low-viscosity cement (LVC).

METHODS: EMBASE, PubMed, Science Direct, Google Scholar and Cochrane Library databases were comprehensively searched from their inception to August 2017. Two researchers independently searched for articles and reviewed all retrieved studies. Forest plots were used to illustrate the results. The Q-test and I statistic were employed to evaluate between-study heterogeneity. Potential publication bias was assessed by funnel plot.

RESULTS: HVC reduced the occurrence of cement leakage (risk ratio (RR) = 0.38, 95% confidence interval (CI) = 0.29 to 0.51, P < 0.00001), especially in the disc space (RR = 0.45, 95% CI = 0.45 to 0.80, P = 0.007) and the vein (RR = 0.54, 95% CI = 0.35 to 0.85, P = 0.008) but not in the intraspinal space (RR = 0.48, 95% CI = 0.19 to 1.23, P = 0.13) or the paravertebral area (RR = 0.63, 95% CI = 0.32 to 1.22, P = 0.17). No significant differences in the visual analogue scale (VAS), Oswestry Disability Index (ODI), injected cement volume or adjacent vertebral fracture were noted between HVC and LVC (P > 0.05).

CONCLUSION: Compared with LVC, HVC results in a reduced incidence of cement leakage for the treatment of vertebral compression fractures, especially in the disc space and vein but not in the intraspinal space or the paravertebral area. In addition, HVC yields the same satisfactory clinical effect as LVC.

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