Analysis of Influencing Factors of Residual Low Back Pain After PVP

Abstract Study design: Retrospective studyObjective: The purpose of this paper is to explore the possible risk factors for residual low back pain after PVP and to analyze their correlation.Method: A retrospective study was conducted on 1120 patients hospitalized for OVCF and treated with PVP between from July 2015 to June 2019 at our Hospital. Baseline, clinical and surgical data were collected to analyze the factors associated with residual low back pain after PVP.Results: 61 patients complained of residual low back pain, and the prevalence was 5.4%. Among the observed indexes included, there were significant differences in preoperative Thoracolumbar fascia injury (TFI), a liquefaction signal on magnetic resonance imaging (MRI) of the affected vertebrae, the number of responsible vertebrae and the distribution of bone cement between the two groups (P<0.05). Multivariate analysis revealed that preoperative TFI (OR=5.378, 95% CI: 1.713~16.888, P=0.004), a liquefaction signal on MRI of the affected vertebrae (OR=6.111, 95% CI：1.898~19.673, P=0.002), the number of responsible vertebrae (OR=0.098, 95% CI: 0.039~0.249, P=0.004), and the distribution of bone cement (OR=0.253, 95% CI: 0.079~0.810, P=0.021) were risk factors for residual low back pain after PVP.Conclusion: TFI, a liquefaction signal on MRI of the affected vertebrae, the number of responsible vertebrae and the distribution pattern of bone cement may be risk factors for residual low back pain after PVP.